Maintenance reference

general

script favs Run sc to get the latest list: ----------------------------------------------- /^\v/^\v/^\v/^\v/^\v/^\v/^\v/^\v/^\v/^\v/^\v/^\ ----------------------------------------------- useful commands and scripts _______________________________________________ \v/^\v/^\v/^\v/^\v/^\v/^\v/^\v/^\v/^\v/^\v/^\v/ --------------------------------------------- i3[scriptname] run an i3-specific script equery files pkg show package files, use |less elogv[iewer] browse recent emerges and comments edit_fluxbox_menu edit and apply fb menu changes edit_firewall edit, restart iptables w/screen mdb-[] access db tools gtdm;gw;gd;gwa go to tdm|wimpy|dune|wally via ssh greplogs [term] search logs for term [-C 3] grepcode [term] search code in curr dir for term ds [dir] get directory sizes pk [proc_regex] kill matches - type ALL for -9 lsof -c [proc] show open files for process which|whereis app show app location|paths alsamixer adjust sound levels eq finally an eq in linux, yay! watch [command] repeatedly run command rs restore screen (w/detach) st;gt search/get torrents post_torrent run from m@wimpy:rrip/flac (or mp3) srd [#] show most recent downloads move_and_resymlink symlink destdir resymlink symlink destdir (if file is already there) rm_torrent.pl torrent cleanup; run for usage extract_tordir extract dir from .torrent ls_broken_symlinks uses curr dir ls_nonsymlinks uses curr dir rm_broken_symlinks uses curr dir, WILL rm THEM td;etd show/edit active todo w/cvs top top resource-consuming procs apachetop -f log site-specific apache requests ex;em emacs with/without X uc;cm cvs update/commit (no message) sp;ep search/edit private data edit_spam_[rules|settings] what it says edit_sieve_rules edit mailfilter rules tree -fid -L 1 great tree display of dir & files edit_torrent_[] shows (common) or rss (rare) search_xbmc_keys search key file for term edit_world edit portage master pkg list xscreensaver-demo then select Disable to turn off recordmydesktop does what it says bandwidth monitor current bw usage edit_rsync_jobs edit bp<->tdm nightly rsync trac-tda $1 $2 trac admin tool, RUN AS ROOT erase_trac_ticket_block 17 20 blah (run as root) update_ampache_tda update music catalog, RUN AS ROOT edit_gentoo_grub_cfg set up gentoo kernels on 3-boot htdj/*_scripts/push_release(.bat) get_ampache_official changes publish_hangthedj_ampache_module get_ampache_official changes cdh;huc;hcm;hpush scripts to manage hangthedj repos also see scripts/git_* helpers ec2-ubuntu-ssh ssh to amazon ec2 server mp3search search (and optionally copy mp3s Disabling xscreensaver emacs ~/.xscreensaver timeout: 12:00:00 # the max timeout is 12 hours crontab -e # So... I have .xscreensaver set to max delay (12 hours) # and I call this every ten hours to restart the idle timer. * */10 * * * /usr/bin/xscreensaver-command --deactivate >/dev/null linux software raid [mdraid] mdraid has not received the polish it needs to Just Work. It has serious flaws that after hours of learning, still leave you unsure and hanging and most likely bailing out of the entire process. But it is the best thing we have on the planet, so let’s distill it down to the essentials. check S.M.A.R.T. data of drives – run tests and make sure they are completely healthy! clean raid drives of superblock and partition data mdadm --misc --zero-superblock /dev/sdd && dd if=/dev/zero of=/dev/sdd bs=1M count=100 && mdadm --examine /dev/sdd mdadm: No md superblock detected on /dev/sdd. use whole drives (not drive partitions) in a newly created raid mdadm --create --verbose /dev/md0 --level=mirror --raid-devices=2 /dev/sdd /dev/sde mdadm: size set to 3906887488K mdadm: automatically enabling write-intent bitmap on large array Continue creating array? yes mdadm: Defaulting to version 1.2 metadata mdadm: array /dev/md0 started. watch -n 1 cat /proc/mdstat # wait 400 FUCKING MINUTES for a GODDAMNED EMPTY 4TB DRIVE to sync with ANOTHER empty 4TB drive, FUCKSAKE # IF YOU REBOOT BEFORE THAT, IT WILL BE AS IF YOU NEVER SET UP A RAID save and reboot and make sure the mdraid service restores the raid mdadm --detail --scan >>/etc/mdadm.conf rc-update add mdraid boot # start then stop then start the /etc/init.d/mdraid service, make sure this works to restore your raid (check /proc/mdstat) # format /dev/md0 as ext4 and set up an auto mount point in /etc/fstab # reboot and pray hopefully much later, upon failure, to restore a single drive, set it up as a raid: madadm -A /dev/sdd # I THINK! it's all very iffy. Which SUCKS. Adding a new drive (with testing) To add a new drive: ls /dev/sd* # and make note of what you have stuff the new drive in the SATA tower or plug it into a SATA socket ls /dev/sd* # you should now see something new, like [/dev/sdf] or do: cat /var/log/messages|grep sd # to see what it used EITHER: parted /dev/sdf print # should show nothing or errors mklabel gpt # this sets the drive up for "big" >2TGB partition labeling - WARNING: TRASHES EVERYTHING ON THE DRIVE mkpart primary ext4 0 -1s # makes an ext4 primary partition that goes from start (0) to end (-1s), yay quit # yeah weird but that's how you exit, things are changed as you go (oops should have told you that before) OR USE: gpart /dev/sdg # a bit cleaner than parted it seems, either works n (use defaults, including 8300 for linux file type) w mkfs.ext4 -m 0 /dev/sdf1 # the [-m 0] is very important; without it, goofy ext4 wastes 5% "saved for root" wtf mount /dev/sdf1 /somewhere # make sure it looks good! # install smartctl tools smartctl -c /dev/sdf # to peek at available tests and how long they typically take to run smartctl -t short /dev/sdf watch -n 3 smartctl -l selftest /dev/sdf # until success, takes about 1 minute # if you're feeling ambitious, rerun with [-t long] umount # we are NOT going to be manually mounting! we need to label the drive and put it in /etc/fstab e2label /dev/sdb1 box-type-sizename # what a stupid f'in name for that util emacs /etc/fstab - and put in an entry like this: /dev/disk/by-label/box-type-sizename /my-mount-location ext4 noatime 0 2 mount /my-mount-location # now it will be there when you reboot! but do this to get it NOW :-) Note that if you mount the new drive under /spiceflow, samba will already be serving it up, whoop! Adding a user to the server su - useradd #newuser# -m -G wheel(,etc) # Other possibilities (likely not needed): ## only needed if you want them to have their own group (otherwise use "users" group) #groupadd #newuser# ## the additional groups here are optional #useradd #newuser# -m -g #newuser# -G users,wheel,audio,video,games,dvd,usb -s /bin/bash ## Only needed if you didn't use [-m] option #mkdir /home/#newuser# #chown #newuser#:users /home/#newuser# passwd #newuser# # grant ssh access by adding to "AllowUsers" em /etc/ssh/sshd_config /etc/init.d/sshd restart # grant samba access to home folder # it's already set up in /etc/samba/smb.conf # but the user must be manually added to samba # use same pwd as before to sync them smbpasswd -a #newuser# /etc/init.d/samba restart # YOU PROBABLY HAVE TO RESTART ANY STUPID WINDOWS BOX before it will see things correctly! crazy # you can try this in Windows but it didn't work for me: # net use # net session \\samba.server.ip.address /delete Check disk speed To check SATA capability: bitpost ~ # hdparm -I /dev/disk/by-label/reservoir-3g-mel |grep -i speed * Gen1 signaling speed (1.5Gb/s) * Gen2 signaling speed (3.0Gb/s) * Gen3 signaling speed (6.0Gb/s) To test read speed: bitpost ~ # hdparm -tT /dev/disk/by-label/reservoir-3g-mel /dev/disk/by-label/reservoir-3g-mel: Timing cached reads: 33760 MB in 2.00 seconds = 16900.70 MB/sec Timing buffered disk reads: 274 MB in 3.00 seconds = 91.28 MB/sec You can use dd to check speed, too: dd conv=fdatasync if=/dev/zero of=/spiceflow/newraid-4tb-bp/dd_test_output.dat bs=8k count=256k =256k 262144+0 records in 262144+0 records out 2147483648 bytes (2.1 GB) copied, 4.57219 s, 470 MB/s # don't forget to clean up.. rm /spiceflow/newraid-4tb-bp/dd_test_output.dat Back up a linux system to a second bootable drive Steps: We want to copy all files from the root drive to a new drive. We also want to update the boot menu to boot off the new drive. We also want to change /etc/fstab on the second drive to use the new root path. These are the steps for backup of the dune box to the /spiceflow/2.0tb-newmovies/ drive. When we're done, we'll boot from that drive to prove we have a working standby system. rsync does an excellent job of copying just what we need. Test it with this: # a (archive mode -rlptgoD) v (verbose) x (don't cross filesystems) h (human-readable) n (dry run) rsync -avxhn --progress / /spiceflow/2.0tb-newmovies/ Do the job with this: rsync -avxh / /spiceflow/2.0tb-newmovies/ sent 28.10G bytes received 8.64M bytes 15.63M bytes/sec total size is 39.57G speedup is 1.41 There was def some old stuff in there worth cleaning up: /home/m/development/svn/mythtv... /var/tmp xbmc log files etc Next we fix /etc/fstab on the new drive to use the drive as root. Original config: /dev/disk/by-label/d-g2-root / ext3 noatime 0 1 /dev/disk/by-label/d-sp-20newmovies /spiceflow/2.0tb-newmovies ext4 noatime 0 2 New config (remember tho, we lose the 2gb drive): /dev/disk/by-label/d-g2-root /root-hot-drive ext3 noatime 0 1 /dev/disk/by-label/d-sp-20newmovies / ext4 noatime 0 2 Note: this never worked out for me due to my system's mix of ext3 and ext4. I'll retry once I migrate everything to ext4. Next, grub: mount /boot em /boot/grub/menu.lst Orig entry: title ----- linux-2.6.34-gentoo-r11_withext4 root (hd0,0) kernel /boot/linux-2.6.34-gentoo-r11_withext4 root=/dev/sda4 Add a new "standby" entry under it - do a "df" to find the root: title ----- ==STANDBY== linux-2.6.34-gentoo-r11_withext4 root (hd0,0) kernel /boot/linux-2.6.34-gentoo-r11_withext4 root=/dev/hda1 Then reboot to standby and see what we have... (no "latest" video library etc., but otherwise the same?)

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OpenELEC

OpenELEC multi-boot install On an existing refind-booted system, set up two new ext4 partitions one about 1GB in size, labeled [OE_SYSTEM], and marked as bootable the other with 10GB or more, labeled [OE_DATA] how do we get the data on them... OpenELEC boot from thumb NOTE: I have the image already on a white stick with red lettering... anyway... Get the latest dev version (stable didn't work for me although this may change) dd it onto a thumb reboot and select to boot to the thumb in BIOS when the boot: line comes up, type "live" to get run a live Kodi rather than run the crufty old installer

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gentoo
Chroot into gentoo from (say) ubuntu # These may already be done mount /mnt/gentoo cp -L /etc/resolv.conf /mnt/gentoo/etc/ mount -t proc none /mnt/gentoo/proc mount --rbind /dev /mnt/gentoo/dev chroot /mnt/gentoo /bin/bash # ** NOW IN CHROOT ** env-update source /etc/profile export PS1="(chroot) $PS1" # GET TO IT!  :-)

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Ubuntu

Ubuntu i3 keybinding favs * Meta-U unity-control-center Ubuntu 15.04 setup Throw Ubuntu on a USB stick following ubuntu instructions. Reboot, select to boot the thumb in BIOS, install, checking the [download as you go] and [install 3rd party stuff] boxes. Things to install ASAP: (everything, then see more detailed notes, below) sudo apt-get install i3 i3lock i3status suckless-tools dunst openssh-server cifs-utils smbclient synergy arandr ubuntu-restricted-extras exfat-fuse exfat-utils hfsprogs acpi if ubuntu forced grub as the boot manager, download the refind zip file, unpack, and (re)run ./install.sh. install i3 EITHER install i3 and i3 meta package through ubuntu: sudo software-center # then install i3 and i3 meta package OR do it yourself: sudo apt-get install i3 i3lock i3status suckless-tools dunst in .i3/config, set up nm-applet to run on login: exec --no-startup-id nm-applet in .i3/config, set up synergy to run on login: exec --no-startup-id synergy gsettings set org.gnome.desktop.background show-desktop-icons false # this disables the gnome desktop from opening when you run nautilus then logout from unity and log back in to i3 nvidia drivers open unity-control-panel AS ROOT: sudo unity-control-panel select Sofware and Updates select Additional Drivers tab, click nvidia (and Intel mobo, etc as needed) proprietary driver, Apply set up ssh sudo apt-get install openssh-server # default is ok but see /etc/ssh/sshd_config for details cd ~m/.ssh scp m@bitpost.com:/home/m/.ssh/id_rsa_3072_nopswd . ln -s id_rsa_3072_nopswd id_rsa set up shared files mkdir development && cd development git clone ssh://bitpost.com/home/m/development/config mkdir config/[wallee or whatever]/ubuntu cd ~ && ln -s /home/m/development/config/[wallee or whatever]/ubuntu config # immediately start adding everything to config [eg .bashrc, etc.] # git preserves symlinks as-is, so copy to repo and symlink back from there. sucks. git clone ssh://bitpost.com/home/m/development/scripts mkdir scripts/ubuntu/[wallee or whatever] # add scripts folders to path in .bashrc set up .bashrc and .bash_profile and make sure they are added to config repo sudo apt-get install cifs-utils smbclient # and create /root/samba_credentials and all the samba /etc/fstab entries sudo apt-get install synergy # and configure it sudo apt-get install arandr # run to turn a monitor back on if it gets turned off during power cycling sudo apt-get install ubuntu-restricted-extras # for mp3s in firefox, etc. sudo apt-get install exfat-fuse exfat-utils # for access to modern exfat thumb drives (>4gb files) sudo apt-get install hfsprogs # if you want to access osx volumes sudo apt-get install acpi # for power management, so we can check battery level on laptop! # download steam .deb file, [sudo software-center ~m/Downloads/.....deb] # set up firefox sync, make sure adblock is installed, etc. from a running terminal, set scrollback buffer to unlimited: Edit -> Profile Preferences -> Scrolling Development setup # install eclipse and android studio manually from zips into development folder use shared eclipse settings, to avoid problems like this. # unzip latest boost into development folder # m@wimpy:~/development/boost_1_57_0$ ./bootstrap.sh # m@wimpy:~/development/boost_1_57_0$ ./b2 install --prefix=/home/m/development/boost_1_57_0 add to .bashrc: export CPPFLAGS=-I/home/m/development/boost_1_57_0/include add to .bashrc: export LDFLAGS=-L/home/m/development/boost_1_57_0/lib add to .bashrc: export LD_LIBRARY_PATH="/home/m/development/boost_1_57_0/lib/" # to find libs at runtime (everything) sudo apt-get install emacs build-essential automake libtool libssl-dev libbz2-dev python-dev curl libcurl4-openssl-dev php5-common php5-curl php5-cli php5-json php5-readline kdiff3 (or individually...) sudo apt-get install emacs sudo apt-get install build-essential automake libtool # for automake - build-essential may be there already sudo apt-get install libssl-dev # to get autotools "-lssl" to work sudo apt-get install libbz2-dev python-dev # used by boost sudo apt-get install curl libcurl4-openssl-dev php5-common php5-curl php5-cli php5-json php5-readline # for php with curl (for etrade PHP SDK etc) sudo apt-get install kdiff3 # will pull in a shit-ton of kde deps, i guess that's good install nasty Oracle JDK (7 - 8 is scheduled for release in 03/2015) sudo add-apt-repository ppa:webupd8team/java sudo apt-get update sudo apt-get install oracle-java7-installer update-alternatives --config java # make note of path update-alternatives --config javac # make note of path sudo nano /etc/environment JAVA_HOME="/usr/lib/jvm/java-7-oracle/jre/bin/java" # actually, use the path from above, of course Ubuntu and shitty Seiki AMD Radeon driver sucks, won't go over 1080p; and Dune (AMD chipset) overscans so you can't see the edge. The only fix I found was to use xrandr. It kinda sucks though bc it's a resize solution that blurs all pixels. Cest la vie. xrandr --output HDMI-0 --set underscan on xrandr --output HDMI-0 --set "underscan hborder" 40 --set "underscan vborder" 22 Let's try the binary ATI driver. lspci -vvnn | grep VGA [...] Advanced Micro Devices, Inc. [AMD/ATI] RS780 [Radeon HD 3200] [1002:9610] nvidia For 4k video on an nvdia chipset (like wimpy), first get Ubuntu to use nvidia's driver: Go to System Settings-> Software & Updates Select the Additional Drivers tab Select the tested, proprietary NVIDIA binary driver REBOOT - the nvidia driver works at the kernel level so you won't be able to just restart X. fools WHY does ubuntu make you do all this? Next, here is the "magic super-secret" Seiki 4K goo that should go in xorg.conf (if needed). It's from: http://ubuntuforums.org/showthread.php?t=2164924 See /etc/X11/xorg.conf for the full details: # MDM added based on http://ubuntuforums.org/showthread.php?t=2164924 # Modeline "3840x2160" 307.00 3840 4016 4104 4400 2160 2168 2178 2250 +hsync +vsync # MDM 2015/02/12 A more recent one from: http://ubuntuforums.org/showthread.php?t=2164924&page=3&s=b53cb9ea1b751f4b9f2fe1aadfb6f43f Modeline "3840x2160" 296.70 3840 4016 4104 4400 2160 2168 2178 2250 +hsync +vsync Modeline "1920x1080" 297 1920 2008 2052 2200 1080 1084 1089 1125 +hsync +vsync To get a full output of what the hell X is doing: scite /var/log/Xorg.0.log & # Or create one if needed X -logverbose 6 :2 # this crashed my machine but did produce a log first scite /var/log/Xorg.2.log & Ubuntu repo management To see what repos Ubuntu is currently using: cat /etc/apt/sources.list Ubuntu upgrade from command line To update ubuntu from an i3 terminal: sudo apt-get update # Fetches the list of available updates sudo apt-get upgrade # Strictly upgrades the current package sudo apt-get dist-upgrade # Installs updates (new ones) Ubuntu synaptic driver (Macbook Pro trackpad) use synclient to determine what works best su - synclient -l # lists all params synclient PalmDetect=1 # temporarily change settings save what you like, here: root@wallee:~# emacs /etc/X11/xorg.conf.d/60-synaptics.conf

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Boxes

BOX: bitpost drives My primary server at Peace Street I had to stuff the goddamned drives right into the case since the rosewill was giving me such shit. In hindsight, it might not have been the rosewill at all... I am considering restuffing the box with the drives... but for now, i have this: sda root sdb1 tvmind sdc1 film sdd & sde softraid sdf1 spicey sdg1 reservoir sdh1 plethora sdi1 win Before it was like this: ================================ BAYS of the bitpost.com Rosewill ================================ To figure this stuff out, it was easiest to mount/umount drives and/or just access the mounted files (and watch the bay lights, of course) Disk layout: 8 7 6 5 4 3 2 1 1) spicey-3g-mel 2) reservoir-3g-mel 3) tvmind-4g-mel 4) newraid1-4tb-bp WD Black installed 2014-10-05 5) plethora-3tb-bp i hope this was not being used - 3GB Seagate barracuda - mount says some ntfs looking thing with no partitions and unable to mount - so i reformatted ext4 6) win-pax09 some old windows drive with lots of game goodies; also has sdf2 swap partition (kill it some day) 7) film-6tb-bp WD Green installed 2014-10-05 8) newraid2-4tb-bp WD Black installed 2014-10-05 ================================ Before THAT, it was this... 8 bay SATA tower houses these drives: 2.0tb archive (sdb right?) 250gb landofthelost circa ABB timeframe /dev/disk/by-label/LandOfTheLost /dev/sdc1 1.5tb raid drive #1 /dev/disk/by-label/d-sp-raid -> ../../sdd1 2.0tb latest /dev/disk/by-label/d-sp-20newmovies -> ../../sde1 1.5tb raid drive #2 (needs label change maybe) There are also these drive partitions: / /dev/sda4 ubuntu root ub_root -> ../../sda5 /vista /dev/sda3 rtorrent keys rtorrent CAN actually work pretty well, IF you pay attention to these basic keys: enter - specify a torrent file to load - USE TAB COMPLETION ctrl-d - STOP torrent, smack that shit, delete it forever ctrl-s - START torrent - WARNING ONLY WORKS IF YOU DISABLE TERMINAL CAPTURE with... stty stop undef stty start undef ctrl-o - change download dir ctrl-k - close files - needed before ctrl-o, usually ctrl-r - recheck hash NOW GET rutorrent going!  :-) rtorrent fix torrents that didn't move into place properly * if the torrent is archived properly, use move_and_resymlink to move it: cd ~/download/torrents/archived/symlinks move_and_resymlink [symlink] [destdir] if things are a mess due to hard drive failure (etc), you should do this: use r(u)torrent to see where rtorrent thinks the files are copy the files, if available, to the final destination (under a .* dir in symlinks) create a symlink: ln -s .music/Fresh/ELO-Secret\ Messages ELO-Secret\ Messages close the torrent files (ctrl-k), move the destination (ctrl-o), start again (ctrl-s) Updating mediawiki installation cd /var/www/localhost/htdocs/mediawiki emacs LocalSettings_redirector.php (to hardcode each site) php maintenance/update.php (repeat for each site) emacs LocalSettings_redirector.php (to reset dynamic behavior) Creating a new ssh key pair for no-password access to a remote system Say you've got a new machine with user [m] and you want to connect to it, do this: install sshd, make sure it's running get on the new machine - ssh to the new machine by typing the password if you don't have direct access $ scp m@tdm:.ssh/id_rsa .ssh/ $ scp m@tdm:.ssh/authorized_keys .ssh/ wow I just had serious issues with basic ssh usage, so i'll put a summary on the wiki basically most misunderstandings stem from describing these two: client: machine that is trying to ssh into the server server: machine that the client user wants to get to most poor sots are just sitting on the client and they create a pair and push their public key to the server but in my case, more often, i want to create a pair on the server and push the private key to the multiple places i need to connect FROM when doing that, you have to push the public key into the server's authorized_keys and configure the client to juggle multiple private keys create a key pair: ssh suser@server ssh-keygen use defaults will create: .ssh/id_rsa (private key) .ssh/id_rsa.pub (public key) put the public key in place: cd .ssh cat id_rsa.pub >>authorized_keys put the private key on the client and configure: scp id_rsa cuser@client:.ssh/id_rsa_server ssh cuser@client em .ssh/config Host tdm thedigitalmachine.com Hostname thedigitalmachine.com IdentityFile ~/.ssh/id_rsa User m Host server Hostname server.com IdentityFile ~/.ssh/id_rsa_server User suser all is full of light bitpost LAN IP addresses All IP address management happens on bitpost, via dnsmasq, which, rocks. Set up machine names in /etc/hosts Set up IP leases by MAC address in top of: /etc/dnsmasq.conf Initially set up bitpost with DHCP as follows: emacs /etc/conf.d/net config_eth0="dhcp" config_eth1="192.168.22.1/24" Turn DHCP-assigned IP into static as follows: /etc/init.d/net.eth0 restart dhcpcd[3867]: eth0: carrier acquired dhcpcd[3867]: DUID 00:01:00:01:1a:c3:6f:da:e0:3f:49:a3:4b:d9 dhcpcd[3867]: eth0: IAID 49:a3:4b:d9 dhcpcd[3867]: eth0: rebinding lease of 66.57.227.83 dhcpcd[3867]: eth0: leased 66.57.227.83 for 86400 seconds dhcpcd[3867]: eth0: adding route to 66.57.226.0/23 dhcpcd[3867]: eth0: adding default route via 66.57.226.1 emacs /etc/conf.d/net config_eth0="66.57.227.83/23" routes_eth0="default via 66.57.226.1" /etc/init.d/net.eth0 restart We will monitor and log success here to see how it goes. 2014/05/05 set to static 66.57.227.83/23, gateway 66.57.226.1 view dnsmasq IP leases cat /var/lib/misc/dnsmasq.leases Updating mediawiki installation cd /var/www/localhost/htdocs/mediawiki emacs LocalSettings_redirector.php (to hardcode each site) php maintenance/update.php (repeat for each site) emacs LocalSettings_redirector.php (to reset dynamic behavior) BOX: case To install ubuntu, I had to add [... --- nomodeset] to the boot line in the grub booter. Then I had to use a desktop 1080p monitor - the 4k Sony would not come up for some reason. BOX: Raspberry Pi 2 and 4k You can override settings in /flash/config.txt; here's how, from here: mount -o remount,rw /flash nano /flash/config.txt # Make your changes, then ctrl+x to save. mount -o remount,ro /flash reboot Settings for 4k (from here)... disable_overscan=1 hdmi_ignore_edid=0xa5000080 hdmi_cvt 3840 2160 30 framebuffer_width=3840 framebuffer_height=2160 hdmi_group=2 hdmi_mode=87 hdmi_pixel_freq_limit=400000000 max_framebuffer_width=3840 max_framebuffer_height=2160 I couldn't get 4K to stick in OpenELEC tho (except for the splash screen(!))... Settings->System->System->Video->Refresh->30Hz Settings->System->System->Video->Resolution->3840x2160 (it won't come up, just drops back to 1080p.. just as well, video at 30fps sucks...) And to overclock the Pi 2 (from here): # OVERCLOCKING TO 1.1 GHz, EXTREME # default is 700 # this will NOT void the warranty :-) arm_freq=1000 sdram_freq=500 core_freq=500 over_voltage=6 temp_limit=80 #Will throttle to default clock speed if hit. # # there is also the "turbo" thingee (that "voids warranty", hot!!) #force_turbo=1 BOX: tdm My primary server that does just about everything internet-related P8P67LE mobo Intel i5 quad core names that are hosted: thedigitalmachine.com thedigitalage.org BOX: dune Follow the ubuntu install. We also use a StarTech AC600 ac wifi adapter. The chipset is specified here. It's a Realtek - RTL8811AU. It is not supported with the vanilla 15.04 kernel, but it's easy to build a module from sources available on github: sudo apt-get update sudo apt-get install linux-headers-generic build-essential git git clone https://github.com/gnab/rtl8812au.git cd ~/rtl8812au make sudo make install sudo modprobe 8812au Then, run NetworkManager and nm-applet, and as soon as you plug the USB dongle in and remove the wired connection, you'll get a running wifi applet, YES. We also want to drive the crappy Seiki at 4K. A 4k mode shows up in our X probe, but ubuntu is not picking it...... yet... OLD gentoo NOTES My XMBC media center and samba-based storage server AMD post-kernel tasks: make sure you update /etc/conf.d/modules for any new modules added update-modules module-rebuild populate module-rebuild rebuild (if you feel brave) module-rebuild list (if you want to do it manually) # NOTE: NO MORE ATI-DRIVERS they no longer support my old-ass onboard HD 3000 graphics chip # But the open-source radeon driver does, oh yeah! emerge lirc # etc emerge -a1 $(qlist -IC x11-drivers/) update-modules dispatch-conf # NO! eselect opengl set ati # aticonfig --ovt opengl # "no supported adapters"? eselect opengl set xorg-x11 reboot BOX: wimpy My main development workstation P8P67LE mobo Intel i5 quad core website check in windows: wmic baseboard get product,Manufacturer,version,serialnumber boot is in /ubuntu/boot grub menu: /ubuntu/boot/grub/menu.lst post-kernel tasks: make sure you update /etc/conf.d/modules for any new modules added update-modules module-rebuild populate module-rebuild rebuild (if you feel brave) module-rebuild list (if you want to do it manually) emerge nvidia-drivers (etc) update-modules dispatch-conf eselect opengl set nvidia reboot if you break gentoo (or rather, if gentoo devs break gentoo, or open source hacks break gentoo, or whatever... but ultimately, you...)... boot into ubuntu su - ./chroot_to_gentoo (chroot) ./setup_chroot ** FIX IT ** to install a new kernel that ubuntu will serve up... build it in a chroot back in ubuntu, copy it: cp /mnt/gentoo/usr/src/linux/arch/x86_64/boot/bzImage /boot/linux-blahblbahba and update grub. you can change em both or just the second (and rerun grub-mkconfig >/boot/grub/grub.cfg): emacs /boot/grub/grub.cfg emacs /etc/grub.d/09_gentoo BOX: wallee My quad-boot laptop Macbook Pro quad boot (OS X, Windows 7, Ubuntu, gentoo) see blog entry for quad boot instructions -- gentoo -- see this for kernel parameters emerge microcode-ctl (and made it a module in kernel) also did everything else I could on this page (some EFI stuff was missing, who cares) - did i do too much? add m to a bunch of groups: for x in wheel cdrom cdrw usb video ; do gpasswd -a m $x ; done using Xfce (everybody's doing it) echo "exec startxfce4" > ~/.xinitrc using nvidia driver eselect opengl set nvidia run nvidia-xconfig using gdm emacs /etc/conf.d/xdm rc-update add xdm default using NetworkManager + consolekit (needed for applet) + nm-applet (for Xfce taskbar applet, where it all happens) + networkmanager-openconnect network driver: broadcom-sta Checking for suitable kernel configuration options... CONFIG_MAC80211: should not be set. But it is. Please check to make sure these options are set correctly. -- to update kernel -- under gentoo, ubunbu should already be mounted; make sure it's available at /ubuntu cd /usr/src/linux build a new kernel as usual make menuconfig, or make oldconfig, or whatever make && make modules_install emerge nvidia-drivers cp arch/x86_64/boot/bzImage /ubuntu/boot/linux-3.10.7-gentoo_oldconfig carefully fix up grub, ubuntu grub is being used we inject our gentoo boot lines into /boot/grub/grub.cfg through /etc/grub.d/11-gentoo-proxy which gets its information from /etc/grub.d/proxifiedScripts/gentoo we can modify grub directly from gentoo - you have to change both grub.cfg AND /etc/grub.d/proxifiedScripts/gentoo to keep things from getting clobbered later or go into ubuntu and change /etc/grub.d/proxifiedScripts/gentoo and run this... grub-mkconfig >/boot/grub/grub.cfg reboot! -- misc -- heres what we need in fstab to mount ubuntu in gentoo with [mount /ubuntu]... mount /dev/disk/by-path/pci-0000\:00\:0b.0-scsi-0\:0\:0\:0-part5 /ubuntu old wallee gentoo networking notes - using ubuntu now! Laptop has both wired and wifi adapters. We set up custom network interface names to make it more clear. I had installed several tools when attempting to get this going. DO NOT DO THAT, they interfere with one another. Removing NetworkManager and going with the highly-recommended wpa_supplicant and its graphical tools wpa_gui and wpa_cli. I'm documenting this since it's so basic yet such a bitch. /etc/udev/rules.d/76-mdm-net.rules # This file was automatically generated by the /lib/udev/write_net_rules # program, run by the persistent-net-generator.rules rules file. # # You can modify it, as long as you keep each rule on a single # line, and change only the value of the NAME= key. # MDM following this to change nw interface names: # http://www.gentoo.org/doc/en/handbook/handbook-x86.xml?part=4&chap=2 # # verified MAC addresses # changed eth0 line to lan0 # changed eth1 line to wifi0 # PCI device 0x10de:0x0ab0 (forcedeth) SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:26:4a:18:ed:58", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="lan0" # PCI device 0x14e4:0x432b (wl) SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:26:bb:07:d3:7d", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="wifi0" Next you have to set up these weird symlinks: cd /etc/init.d ln -s net.lo net.lan0 ln -s net.lo net.wifi0 Now add them to runlevels: rc-update add net.lan0 default rc-update add net.wifi0 default Now add them to runlevels: rc-update add net.lan0 default rc-update add net.wifi0 default Fix the system so that only one is required for startup to work... /etc/rc.conf rc_depend_strict="NO" No, we're not even close to done yet... We have to CUT the firmware out of the proprietary driver. Wow. su - emerge -av b43-fwcutter # NOT THIS, DAAAMN: bcm43xx-fwcutter emerge -av sys-firmware/b43-firmware export FIRMWARE_INSTALL_DIR="/lib/firmware" mkdir macbook_bcm43xx_wireless_driver cd macbook_bcm43xx_wireless_driver wget http://www.lwfinger.com/b43-firmware/broadcom-wl-5.100.138.tar.bz2 tar xjf broadcom-wl-5.100.138.tar.bz2 b43-fwcutter -w "$FIRMWARE_INSTALL_DIR" broadcom-wl-5.100.138/linux/wl_apsta.o modprobe b43 /etc/init.d/net.wifi0 start Nope. What a fuckbucket of retardedness. Look at the notes this guy made - brief but heavy - i think i need to purge b43 and get the "wl" driver working instead. Reset 1020 cable modem so it grants a real IP address (not private) Resetting things sometimes has to be done in this precise order: cable modem -> blue cable -> **ONBOARD** bitpost NIC LAN switch -> yellow cable -> **ADDON CARD** bitpost NIC power off bitpost and cable modem power up cable modem wait 5 minutes power up bitpost verify that you can ping google.com, LAN works, etc.

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