[drm:intel_pipe_config_compare [i915]] *ERROR* mismatch in ips_enabled (expected 1, found 0) appears repeatedly during boot; Ubuntu boots normally to GNOME3 afterwards

[Alex Acevedo]

The problem began after upgrading to Ubuntu 15.10 from Ubuntu 15.04 using the GUI Software Updater packaged with the previous version of GNOME3. I haven't encountered any observable problems beyond this message, and GNOME3 seems to work normally despite the error messages.

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: libdrm-intel1 2.4.64-1
ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
Uname: Linux 4.2.0-16-generic x86_64
ApportVersion: 2.19.1-0ubuntu4
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CurrentDesktop: GNOME
Date: Wed Oct 28 16:12:33 2015
DistUpgraded: 2015-10-23 21:50:00,570 DEBUG enabling apt cron job
DistroCodename: wily
DistroVariant: ubuntu
GraphicsCard:
 Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a16] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Dell Device [1028:05e9]
InstallationDate: Installed on 2015-09-10 (47 days ago)
InstallationMedia: Ubuntu-GNOME 15.04 "Vivid Vervet" - Release amd64 (20150422)
MachineType: Dell Inc. Inspiron 5537
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-16-generic.efi.signed root=UUID=2ee05cb3-c1a0-4141-8f42-b976956ff8c0 ro quiet splash vt.handoff=7
SourcePackage: libdrm
UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
UpgradeStatus: Upgraded to wily on 2015-10-24 (4 days ago)
dmi.bios.date: 04/30/2014
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A08
dmi.board.name: 0845MX
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: A08
dmi.modalias: dmi:bvnDellInc.:bvrA08:bd04/30/2014:svnDellInc.:pnInspiron5537:pvrA08:rvnDellInc.:rn0845MX:rvrA00:cvnDellInc.:ct8:cvrA08:
dmi.product.name: Inspiron 5537
dmi.product.version: A08
dmi.sys.vendor: Dell Inc.
version.compiz: compiz N/A
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.64-1
version.libgl1-mesa-dri: libgl1-mesa-dri 11.0.2-1ubuntu4
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 11.0.2-1ubuntu4
version.xserver-xorg-core: xserver-xorg-core 2:1.17.2-1ubuntu9
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.2-1ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0+git20150819-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20150808-0ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu3
xserver.bootTime: Wed Oct 28 15:46:39 2015
xserver.configfile: default
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
 product id 991
 vendor LGD
xserver.version: 2:1.17.2-1ubuntu9

[Launchpad Janitor (janitor)]

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

[Vukasin Toroman (vukasin)]

Hi everyone.

I have had this issue on my Lenovo Yoga with 15.10 . After trying different beta kernels from Ubuntu and getting the same crashes, I've installed the 4.2.5 mainline kernel and the problem went away. So I guess the error must have been introduced in one of Canonical's patches.

Also, using 4.2.5 mainline kernel (can be found here http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.2.5-wily/) can be a good workaround.

[sunpho (fr-sanfilippo)]

I installed the 4.2.5 mainline kernel, the problem is still there

[Vukasin Toroman (vukasin)]

You're right, sorry for being imprecise. The log entries are still there but the system no longer crashes when they appear :-).

[giuseppe (giuerom)]

I've the same issue for Ubuntu Gnome 15.10 on my hp pavilion 15