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[jerrylamos <jerrylamos@xxxxxxxxxxxx>]

Just installed 3.16.0-6 .iso and upgraded today to 3.16.0-10.

Both kernels are in /boot.

If I select 3.16.0-10 boots to desktop, from past investigations that
means compiz failed and hence unity failed.

If I select 3.16.0-6 boots just fine, 3D and all.

Since it's the same install, everything else in utopic is the same, just
one kernel boots fine and the other does not.

BTW, once in many many tries 3.16.0-10 does boot.  That's how a race
condition would behave, depending on what code gets past a certain point
versus other code.

This one runs:

Linux Lenovo2 3.16.0-6-generic #11-Ubuntu SMP Mon Jul 28 01:59:56 UTC
2014 x86_64 x86_64 x86_64 GNU/Linux

VGA compatible controller: Intel Corporation 4 Series Chipset Integrated Graphics Controller (rev 03)
model name	: Intel(R) Core(TM)2 Duo CPU     E8400  @ 3.00GHz

BTW, utopic 32 bit runs fine, compiz, unity and all.  Lubuntu amd64 runs
fine, no surprise, no compiz.

Will boot the failing 3.16.0-10 and get it's LSPCI.

-- 
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Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1346096

Title:
  [drm:init_ring_common] *ERROR* render ring initialization failed

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  After last apt-get dist-upgrade my computer can not start with a
  graphic environment. It start but it's freeze in login screen (cursor
  blink not blink, it's all screen locked).

  I only can login into my Ubuntu from Grub > Advanced options > resume.

  Computer: Toshiba Satellite Pro U400-182 with Intel graphic card
  (Intel GM45 Chipset).

  Ubuntu version: Ubuntu 14.10 Utopic Unicorn (development branch)

  Kernel: Linux 3.16.0-4-generic #9-Ubuntu SMP Mon Jul 14 11:55:55 UTC
  2014 x86_64 x86_64 x86_64 GNU/Linux

  Error in syslog is:

  Jul 18 11:00:14 lito-Ubuntu kernel: [    2.420468] [drm:init_ring_common] *ERROR* render ring initialization failed ctl 0001f001 (valid? 1) head 00000304 tail 00000000 start 00503000 [expected 00503000]
  Jul 18 11:00:14 lito-Ubuntu kernel: [    2.420478] [drm:i915_gem_init] *ERROR* Failed to initialize GPU, declaring it wedged

  Xorg log:

  [    11.900] (II) intel: Driver for Intel(R) Integrated Graphics Chipsets:
          i810, i810-dc100, i810e, i815, i830M, 845G, 854, 852GM/855GM, 865G,
          915G, E7221 (i915), 915GM, 945G, 945GM, 945GME, Pineview GM,
          Pineview G, 965G, G35, 965Q, 946GZ, 965GM, 965GME/GLE, G33, Q35, Q33,
          GM45, 4 Series, G45/G43, Q45/Q43, G41, B43
  [    11.901] (II) intel: Driver for Intel(R) HD Graphics: 2000-5000
  [    11.901] (II) intel: Driver for Intel(R) Iris(TM) Graphics: 5100
  [    11.901] (II) intel: Driver for Intel(R) Iris(TM) Pro Graphics: 5200
  [    11.901] (II) modesetting: Driver for Modesetting Kernel Drivers: kms
  [    11.901] (II) FBDEV: driver for framebuffer: fbdev
  [    11.901] (II) VESA: driver for VESA chipsets: vesa
  [    11.901] (++) using VT number 7

  [    11.927] (EE) open /dev/dri/card0: No such file or directory
  [    11.927] (WW) Falling back to old probe method for modesetting
  [    11.927] (EE) open /dev/dri/card0: No such file or directory

  No errors in dmesg

  Related intel packages:

  ii  intel-gpu-tools        1.7-1            amd64            tools for debugging the Intel graphics driver
  ii  libdrm-intel1:amd64    2.4.54-1         amd64            Userspace interface to intel-specific kernel DRM
  ii  libdrm-intel1:i386     2.4.54-1         i386             Userspace interface to intel-specific kernel DRM
  un  libva-intel-vaapi-driv <none>           <none>           (no description available)
  ii  xserver-xorg-video-int 2:2.99.910-0ubun amd64            X.Org X server -- Intel i8xx, i9xx display driver

  Thanks in advance.
  --- 
  ApportVersion: 2.14.4-0ubuntu2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/pcmC0D0c:   lito       5855 F...m pulseaudio
   /dev/snd/pcmC0D0p:   lito       5855 F...m pulseaudio
   /dev/snd/controlC0:  lito       5855 F.... pulseaudio
   /dev/snd/seq:        timidity   3621 F.... timidity
  DistroRelease: Ubuntu 14.10
  HibernationDevice: RESUME=UUID=fca42103-06f9-4fcd-bbca-9e8aba068dad
  InstallationDate: Installed on 2012-07-10 (740 days ago)
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
  MachineType: TOSHIBA Satellite Pro U400
  Package: linux (not installed)
  ProcEnviron:
   LANGUAGE=en_US
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-4-generic root=UUID=3a477584-a099-4e62-879e-855c5aed40c3 ro recovery nomodeset
  ProcVersionSignature: Ubuntu 3.16.0-4.9-generic 3.16.0-rc5
  PulseList:
   Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied
   No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-3.16.0-4-generic N/A
   linux-backports-modules-3.16.0-4-generic  N/A
   linux-firmware                            1.132
  Tags:  utopic
  Uname: Linux 3.16.0-4-generic x86_64
  UpgradeStatus: Upgraded to utopic on 2013-10-16 (277 days ago)
  UserGroups:
   
  _MarkForUpload: True
  dmi.bios.date: 10/26/2010
  dmi.bios.vendor: TOSHIBA
  dmi.bios.version: V5.00
  dmi.board.name: Satellite Pro U400
  dmi.board.vendor: TOSHIBA
  dmi.board.version: Not Applicable
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: TOSHIBA
  dmi.chassis.version: N/A
  dmi.modalias: dmi:bvnTOSHIBA:bvrV5.00:bd10/26/2010:svnTOSHIBA:pnSatelliteProU400:pvrPSU45E-01D015CE:rvnTOSHIBA:rnSatelliteProU400:rvrNotApplicable:cvnTOSHIBA:ct10:cvrN/A:
  dmi.product.name: Satellite Pro U400
  dmi.product.version: PSU45E-01D015CE
  dmi.sys.vendor: TOSHIBA

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