Ok I looked at backporting these three commits. To cut a long story
short one of these is not needed because it is only applicable at the
higher level (though needed there) and one is actually for dpms issues.
This leaves the commit below:
commit 63621dafc8e140afdfa12c8deadb41af818e455d
Author: Ben Skeggs <bske...@redhat.com>
Date: Wed Oct 1 11:11:25 2014 +1000
drm/nouveau: punt fbcon resume out to a workqueue
plus a foundation commit:
commit b6437dc0bfc8018c4c3a9e36cffdd073a4c1cf70
Author: Ben Skeggs <bske...@redhat.com>
Date: Sat Jun 28 20:44:07 2014 +1000
drm/nouveau/kms: take more care when pulling down accelerated fbcon
I produced test kernels for these which @Nik.Th validated. I will
submit these to kernel-team@ for review.
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https://bugs.launchpad.net/bugs/1386695
Title:
[3.16.0-23] Resume from suspend/hibernation, GPU lock - possible
regression
Status in The Linux Kernel:
Confirmed
Status in “linux” package in Ubuntu:
Triaged
Bug description:
I'm testing the new development branch (Vivid Vervet), which currently has
the Utopic kernel 3.16.0-23-generic installed.
(proposed repositories are enabled)
This problem might be a regression, and it has been reported
upstream:
https://bugs.freedesktop.org/show_bug.cgi?id=81136
Problem:
When I try to resume from hibernation the screen hangs and the GPU is
locked. It cannot load the graphics properly. The monitor loses its
signal completely.
Testing:
Blacklisting the nouveau driver and perform the following
hibernate/resume test, seems to indicate that indeed the problem is
nouveau, because the test has been completed successfully:
# echo platform > /sys/power/disk
# echo devices > /sys/power/pm_test
# echo disk > /sys/power/state
Mainline:
The problem seems to be fixed in latest stable mainline kernel, for now
3.17.1-031701-generic (Utopic).
ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: linux-image-3.16.0-23-generic 3.16.0-23.31 [modified:
boot/vmlinuz-3.16.0-23-generic]
ProcVersionSignature: Ubuntu 3.16.0-23.31-generic 3.16.4
Uname: Linux 3.16.0-23-generic x86_64
ApportVersion: 2.14.7-0ubuntu8
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC3: nikos 1690 F.... pulseaudio
/dev/snd/controlC1: nikos 1690 F.... pulseaudio
/dev/snd/controlC2: nikos 1690 F.... pulseaudio
/dev/snd/controlC0: nikos 1690 F.... pulseaudio
CurrentDesktop: Unity
Date: Tue Oct 28 15:24:09 2014
HibernationDevice: RESUME=UUID=f0688f3d-9938-4cb3-b79e-7c67f7593350
InstallationDate: Installed on 2014-10-24 (4 days ago)
InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
IwConfig:
eth0 no wireless extensions.
lo no wireless extensions.
MachineType: MSI MS-7623
ProcFB: 0 nouveaufb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-23-generic
root=UUID=170bb898-7aa9-4678-8e80-58a445647f93 ro
resume=/dev/disk/by-uuid/f0688f3d-9938-4cb3-b79e-7c67f7593350
RelatedPackageVersions:
linux-restricted-modules-3.16.0-23-generic N/A
linux-backports-modules-3.16.0-23-generic N/A
linux-firmware 1.138
RfKill:
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/06/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: V17.9
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: 880GMA-E45 (MS-7623)
dmi.board.vendor: MSI
dmi.board.version: 3.0
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: MSI
dmi.chassis.version: 3.0
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrV17.9:bd12/06/2010:svnMSI:pnMS-7623:pvr3.0:rvnMSI:rn880GMA-E45(MS-7623):rvr3.0:cvnMSI:ct3:cvr3.0:
dmi.product.name: MS-7623
dmi.product.version: 3.0
dmi.sys.vendor: MSI
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