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[Launchpad Bug Tracker <1477801@xxxxxxxxxxxxxxxxxx>]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: libdrm (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1477801

Title:
  libdrm-nouveau2 crashes X with kernel 3.13.0-58

Status in libdrm package in Ubuntu:
  Confirmed

Bug description:
  (Apologies for not using ubuntu-bug, but I've been waiting an hour for
  it to get past "Collecting problem information".)

  I upgraded system to kernel 3.16.0-43.58~14.04.1 (amd64) today. X now
  crashes with the error "nouveau - gpu lockup" whenever I run Google
  Chrome (google-chrome-stable 44.0.2403.89-1). Big black boxes appear
  when I open a bunch of tabs and hover the mouse over the tabs.
  Eventually X crashes, freezing the whole screen with garbage all over
  it, and syslog contains the "nouveau" errors below.

  The problem went away when I downgraded libdrm2 and libdrm-nouveau2 to
  2.4.56-1~ubuntu2 (was 2.4.60-2~ubuntu14.04.1). I did this after
  reading https://bugs.freedesktop.org/show_bug.cgi?id=89842#c19 (see
  comment #19).

  Here's syslog. The "nouveau gpu lockup" error doesn't appear, but it
  did appear onscreen.

  Jul 23 19:22:35 myhost kernel: [ 2568.498288] nouveau E[chrome[7073]] multiple instances of buffer 322 on validation list
  Jul 23 19:22:35 myhost kernel: [ 2568.498297] nouveau E[chrome[7073]] validate_init
  Jul 23 19:22:35 myhost kernel: [ 2568.498299] nouveau E[chrome[7073]] validate: -22
  Jul 23 19:22:35 myhost kernel: [ 2568.514019] nouveau E[   PFIFO][0000:01:00.0] PFIFO: read fault at 0x0008101000 [PAGE_NOT_PRESENT] from (unknown enum 0x00000000)/GPC0/(unknown enum 0x0000000f) on channel 0x007f9af000 [unknown]
  Jul 23 19:23:06 myhost kernel: [ 2598.744949] nouveau E[     DRM] GPU lockup - switching to software fbcon
  Jul 23 19:23:23 myhost kernel: [ 2616.347931] nouveau E[Xorg[1550]] failed to idle channel 0xcccc0001 [Xorg[1550]]
  Jul 23 19:23:38 myhost kernel: [ 2631.335533] nouveau E[Xorg[1550]] failed to idle channel 0xcccc0001 [Xorg[1550]]
  Jul 23 19:23:40 myhost kernel: [ 2633.336751] nouveau E[   PFIFO][0000:01:00.0] playlist 0 update timeout
  Jul 23 19:23:43 myhost kernel: [ 2635.629793] nouveau W[   PFIFO][0000:01:00.0] unknown status 0x00000100
  Jul 23 19:23:47 myhost kernel: [ 2639.921155] nouveau W[   PFIFO][0000:01:00.0] unknown status 0x00000100
  Jul 23 19:23:50 myhost vmnet-dhcpd: DHCPINFORM for 192.168.142.131 from 00:0c:29:d5:2d:15 via vmnet8
  Jul 23 19:23:50 myhost vmnet-dhcpd: DHCPACK on 192.168.142.131 to 00:0c:29:d5:2d:15 via vmnet8
  Jul 23 19:23:51 myhost kernel: [ 2644.212519] nouveau W[   PFIFO][0000:01:00.0] unknown status 0x00000100
  Jul 23 19:23:55 myhost kernel: [ 2648.321472] nouveau E[Xorg[1550]] failed to idle channel 0xcccc0000 [Xorg[1550]]
  Jul 23 19:23:56 myhost kernel: [ 2648.503871] nouveau W[   PFIFO][0000:01:00.0] unknown status 0x00000100
  Jul 23 19:24:00 myhost kernel: [ 2652.795221] nouveau W[   PFIFO][0000:01:00.0] unknown status 0x00000100
  Jul 23 19:24:04 myhost kernel: [ 2657.086572] nouveau W[   PFIFO][0000:01:00.0] unknown status 0x00000100
  Jul 23 19:24:08 myhost kernel: [ 2661.377922] nouveau W[   PFIFO][0000:01:00.0] unknown status 0x00000100
  Jul 23 19:24:10 myhost kernel: [ 2663.309074] nouveau E[Xorg[1550]] failed to idle channel 0xcccc0000 [Xorg[1550]]
  Jul 23 19:24:12 myhost kernel: [ 2665.310067] nouveau E[   PFIFO][0000:01:00.0] playlist 0 update timeout
  Jul 23 19:24:12 myhost colord: Automatic remove of icc-ed0e29bb4d99e8caee0ed705188568cc from xrandr-Dell Inc.-DELL 2405FPW-T61335980T0S
  Jul 23 19:24:12 myhost colord: Profile removed: icc-ed0e29bb4d99e8caee0ed705188568cc
  Jul 23 19:24:12 myhost colord: Profile removed: icc-cc453361e0e5fe47e15ec698dbee0254
  Jul 23 19:24:12 myhost colord: device removed: xrandr-Dell Inc.-DELL 2405FPW-T61335980T0S
  Jul 23 19:24:13 myhost kernel: [ 2665.669272] nouveau W[   PFIFO][0000:01:00.0] unknown status 0x00000100
  Jul 23 19:24:17 myhost kernel: [ 2669.960633] nouveau W[   PFIFO][0000:01:00.0] unknown status 0x00000100
  Jul 23 19:24:21 myhost kernel: [ 2674.252007] nouveau W[   PFIFO][0000:01:00.0] unknown status 0x00000100
  Jul 23 19:24:26 myhost kernel: [ 2678.543381] nouveau W[   PFIFO][0000:01:00.0] unknown status 0x00000100
  Jul 23 19:24:27 myhost kernel: [ 2680.434907] nouveau E[chrome[7073]] failed to idle channel 0xcccc0000 [chrome[7073]]
  Jul 23 19:24:30 myhost kernel: [ 2682.834756] nouveau W[   PFIFO][0000:01:00.0] unknown status 0x00000100
  Jul 23 19:24:34 myhost kernel: [ 2687.126132] nouveau W[   PFIFO][0000:01:00.0] unknown status 0x00000100
  Jul 23 19:24:38 myhost kernel: [ 2691.417509] nouveau W[   PFIFO][0000:01:00.0] unknown status 0x00000100
  Jul 23 19:24:42 myhost kernel: [ 2695.422508] nouveau E[chrome[7073]] failed to idle channel 0xcccc0000 [chrome[7073]]
  Jul 23 19:24:43 myhost kernel: [ 2695.708885] nouveau W[   PFIFO][0000:01:00.0] unknown status 0x00000100
  Jul 23 19:24:44 myhost kernel: [ 2697.420975] nouveau E[   PFIFO][0000:01:00.0] channel 4 [chrome[7073]] kick timeout
  Jul 23 19:24:44 myhost kernel: [ 2697.423943] nouveau W[   PFIFO][0000:01:00.0] unknown status 0x00000100
  Jul 23 19:24:46 myhost kernel: [ 2699.422229] nouveau E[   PFIFO][0000:01:00.0] playlist 0 update timeout
  Jul 23 19:24:46 myhost kernel: [ 2699.422279] nouveau ![   PFIFO][0000:01:00.0] unhandled status 0x00000001
  Jul 23 19:24:49 myhost kernel: [ 2701.560679] nouveau E[   PFIFO][0000:01:00.0] playlist 0 update timeout
  Jul 23 19:24:51 myhost kernel: [ 2703.576392] nouveau E[   PFIFO][0000:01:00.0] playlist 0 update timeout

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