Public bug reported:
I observe lots of i915 warnings in dmesg after the upgrade from 14.04 to 16.04.
My current kernel is 4.4.0-59-generic.
Warnings are:
[ 1078.547129] ------------[ cut here ]------------
[ 1078.547372] WARNING: CPU: 0 PID: 273 at
/build/linux-5Vy7q8/linux-4.4.0/drivers/gpu/drm/i915/intel_display.c:12169
intel_atomic_check+0x307/0x6d0 [i915]()
[ 1078.547388] WARN_ON(!connector_state->crtc)
...
[ 1078.591137] ------------[ cut here ]------------
[ 1078.591377] WARNING: CPU: 0 PID: 273 at
/build/linux-5Vy7q8/linux-4.4.0/drivers/gpu/drm/i915/intel_display.c:12746
intel_modeset_check_state+0x556/0x910 [i915]()
[ 1078.591394] encoder's enabled state mismatch (expected 0, found 1)
...
I have the following video controller:
00:02.0 VGA compatible controller: Intel Corporation Mobile 945GSE Express
Integrated Graphics Controller (rev 03)
00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML
Express Integrated Graphics Controller (rev 03)
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-59-generic 4.4.0-59.80
ProcVersionSignature: Ubuntu 4.4.0-59.80-generic 4.4.35
Uname: Linux 4.4.0-59-generic i686
AlsaDevices:
total 0
crw-rw---- 1 root audio 116, 1 янв 14 08:17 seq
crw-rw---- 1 root audio 116, 33 янв 14 08:17 timer
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.20.1-0ubuntu2.4
Architecture: i386
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq',
'/dev/snd/timer'] failed with exit code 1:
Date: Sat Jan 14 08:30:26 2017
InstallationDate: Installed on 2012-08-28 (1599 days ago)
InstallationMedia: Ubuntu-Server 12.04.1 LTS "Precise Pangolin" - Release i386
(20120817.3)
IwConfig:
lo no wireless extensions.
eth0 no wireless extensions.
Lsusb:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: Evo Technologies, Inc. ECOPC N.1A/LE
PciMultimedia:
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-59-generic
root=/dev/mapper/hostname-root ro
RelatedPackageVersions:
linux-restricted-modules-4.4.0-59-generic N/A
linux-backports-modules-4.4.0-59-generic N/A
linux-firmware 1.157.6
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux
UpgradeStatus: Upgraded to xenial on 2016-08-28 (139 days ago)
dmi.bios.date: 05/19/2010
dmi.bios.vendor: Intel Corp.
dmi.bios.version: JT94510H.86A.0045.2010.0519.1750
dmi.board.name: D945GSEJT
dmi.board.vendor: Intel Corporation
dmi.board.version: AAE57850-407
dmi.chassis.type: 3
dmi.modalias:
dmi:bvnIntelCorp.:bvrJT94510H.86A.0045.2010.0519.1750:bd05/19/2010:svnEvoTechnologies,Inc.:pnECOPCN.1A/LE:pvr:rvnIntelCorporation:rnD945GSEJT:rvrAAE57850-407:cvn:ct3:cvr:
dmi.product.name: ECOPC N.1A/LE
dmi.sys.vendor: Evo Technologies, Inc.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug i386 xenial
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https://bugs.launchpad.net/bugs/1656539
Title:
Lots of i915 warnings in the log
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