[13:01] <bennabiy> Did a recent update drop driver support for Intel Mobile 4 Series chipsets?
[13:03] <tjaalton> no
[13:27] <bennabiy> I am only able to pull up video, either through a liveCD or LTSP booting, when using VESA driver, otherwise the screen flickers and goes blank about 10 seconds post grub menu
[13:27] <bennabiy> but the system is up and running, just no display
[13:29] <tjaalton> and only one kernel installed to choose from?
[13:32] <tjaalton> if you say it's a regression then try the previous kernels
[14:32] <bennabiy> only one kernel installed
[14:33] <bennabiy> I am trying to remote into the system to see if there are any errors.
[14:33] <tjaalton> so what do you mean "recent update"?
[14:33] <tjaalton> what version is this? and the kernel?
[14:34] <tjaalton> if vivid, make sure you have at least 3.19.0-13
[14:34] <bennabiy> trusty 
[14:34] <tjaalton> installed when?
[14:35] <bennabiy> just now
[14:35] <bennabiy> 3.13.0-49-generic
[14:36] <bennabiy> using X.org 1.15.1
[14:36] <tjaalton> the image doesn't have that kernel, did you manually remove the install kernel?
[14:36] <tjaalton> use a release image
[14:37] <bennabiy> This is an LTSP installed chroot, but it also happens from a linuxmint 17.1 liveCD
[14:38] <tjaalton> so nomodeset works? get the relevant bits of a non-working boot from /var/log/kern.log and put it somewhere
[14:39] <bennabiy> nomodeset works, just 640x480
[14:39] <tjaalton> yes
[14:43] <bennabiy> https://pastebin.mozilla.org/8830478
[14:43] <bennabiy> from a machine which lost video, but I can remote in
[14:43] <tjaalton> what hw is it?
[14:44] <bennabiy> this is a hp st5742
[14:44] <bennabiy> thin client
[14:44] <bennabiy> it was just working on a previous install, and when I did a fresh install of 14.04 / mint 17.1 the video on the server is fine, but not on the clients generated from the repositories
[14:45] <bennabiy> nor from the live CD
[14:45] <bennabiy> which is strange, but once again, nomodeset works there
[14:46] <bennabiy> When 14.04 first came out, these had no problems with the graphics, but something changed with the latest 14.04
[14:46] <tjaalton> then you need to install earlier kernels and bisect which broke it
[14:46] <bennabiy> I have 3 other labs all running fine with the same hardware, and this one was running 13.04 just fine
[14:47] <bennabiy> do you have a suggestion as to which one to go back to?
[14:47] <tjaalton> 14.04 installer comes with -24
[14:47] <tjaalton> no
[14:47] <tjaalton> file a bug
[14:47] <tjaalton> test these
[14:48] <bennabiy> So try -24, if it works,... ?
[14:48] <tjaalton> https://launchpad.net/ubuntu/trusty/+source/linux
[14:48] <tjaalton> you get the earlier ones there
[14:48] <tjaalton> remember to install -extra too
[14:49] <bennabiy> ok
[14:49] <tjaalton> if you say stock 14.04 worked
[14:49] <tjaalton> best to try -24 to rule out it's not something else messing things
[14:50] <tjaalton> use the latest of -XX.YY, so for -24 test -24.47
[14:50] <bennabiy> ok
[14:50] <bennabiy> let me try that.
[14:57] <bennabiy> ok, so installed linux-image-extra-3.13.0-24-generic as well as same without extra
[14:58] <bennabiy> any other packages that I would need to install?
[15:00] <tjaalton> not at this point
[15:01] <bennabiy> trying it now
[15:01] <bennabiy> hrm. -24 did not work
[15:02] <tjaalton> so your setup is busted
[15:02] <bennabiy> same thing happened at the same point
[15:05] <bennabiy> what should I do about it?
[15:06] <bennabiy> nomodeset works, which means that the basic functionality of the system works
[15:06] <bennabiy> How can I pinpoint what is "busted"?
[15:07] <tjaalton> I don't know how you build your ltsp setup, and don't care to know either. but something in it is not ok if stock trusty doesn't work either
[15:13] <bennabiy> This is not just happening with LTSP, but also with a liveCD it does the same thing
[15:16] <tjaalton> and doesn't work on any machines of the same kind?
[15:16] <tjaalton> the hw could be broken too
[15:19] <bennabiy> Even though it was just working on a 13.04 system?
[15:19] <bennabiy> and works when I boot back into that system?
[15:20] <bennabiy> 3.8 kernel
[15:21] <tjaalton> you said trusty worked
[15:22] <tjaalton> anyway, same applies.. find out where it broke
[15:22] <bennabiy> I know it worked at a different location with the same hardware
[15:23] <bennabiy> I have 2 other labs running the same hardware clients, with 14.04 installed (with linuxmint 17) which I think were installed before 14.04.2
[15:24] <bennabiy> I appreciate your input, I want to track this down.
[15:24] <bennabiy> I am downloading a fresh copy of the ISO to make a live USB, will test to see if stock 14.04.2 works
[15:26] <bennabiy> here is a copy from dmesg. https://pastebin.mozilla.org/8830489
[15:27] <tjaalton> rule out hw issues first
[15:28] <tjaalton> cabling etc
[15:28] <tjaalton> [   14.279246] [drm] GMBUS [i915 gmbus panel] timed out, falling back to bit banging on pin 3
[15:28] <bennabiy> Would cabling be the issue if it is displaying just fine up to that point?
[15:28] <tjaalton> fair point :)
[15:28] <tjaalton> still
[15:29] <tjaalton> dunno
[15:29] <bennabiy> I am not saying you are wrong... just wondering ;)
[15:29] <tjaalton> easy to verify
[15:29] <tjaalton> I'm off ->
[15:30] <bennabiy> Thanks for your help
[15:47] <bennabiy> If I needed to test an older image of 14.04 (pre .2) where would I go?
[15:51] <bennabiy> I am getting this error in [drm] GMBUS [i915 gmbus panel] timed out, falling back to bit banging on pin 3 and am unable to see anything on the screen after a brief flicker
[15:52] <bennabiy> Does the same thing with an Ubuntu 14.04.2 liveCD as well as a linuxmint 17.1 (based on 14.04.2) liveCD. 14.04 stock worked, as well as mint 17 stock
[16:23] <tjaalton> releases.ubuntu.com
[17:13] <bennabiy> thank you again tjaalton 
[17:13] <bennabiy> I have searched there, but still not finding the stock 14.04
[17:14] <bennabiy> bah, found it :)
[17:15] <bennabiy> actually, I did not find it...
[17:15] <bennabiy> I am looking for 1386 14.04 image
[17:55] <tjaalton> old-releases.u.c
[17:57] <bennabiy> tjaalton: thanks. that did it
[19:39] <bennabiy> tjaalton: This is strange, would there be something which would cause the displayport to not work once it hits a certain point?
[19:39] <bennabiy> I hooked up a VGA monitor and it worked fine
[19:39] <bennabiy> but I hook up to the display port and it does not
[19:39] <bennabiy> but if I boot to a different install, the display port works fine
[20:50] <bandit-led> any idea how to get dkms to build and install nvidia properly? I like to run it after a kernel update but it is not working since nvidia-uvm was added to nvidia 
[20:50] <bandit-led> sudo dpkg-reconfigure nvidia works but i have to install the kernel then reboot and rebuild the module and restart again
[20:53] <bandit-led> running NVIDIA binary driver - version 346.59 
[20:55] <bandit-led> sudo dkms install -m nvidia -v 346-346.59 -k 4.0.0-rc1-02232015 is what i usually run
[20:55] <bandit-led> just changing the kernel and nvidia versions
[20:57] <bandit-led> hmm nap time maybe  i will get a response by the time i get up from my nap :)
[22:31] <furkan> interesting, i tried compiling mesa from git on Ubuntu 15.04, following the instructions on freedesktop.org, and it works perfectly fine
[22:31] <furkan> i dunno why 14.04 was so problematic
[22:33] <furkan> when i add the file in /etc/ld.so.conf.d to point to /opt/xorg/lib, Xorg just segfaults
[22:59] <bandit-awake> hmmm this channell seems sleepy