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Message #74643
[Bug 1339939]
Created attachment 104227
head start before enabling
Another crazy idea. Looking at logs and Jiri's patch, the critical step
seems to be when we set the valid bit. Let's see what happens if we give
the ring a headstart, hopefully catching the moving ring.
You can experiment with different values, as long as they're a multiple
of 8. 64 might be magic since it's the cacheline size (which in a few
w/a is really important for register writes, even though that's
strange).
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https://bugs.launchpad.net/bugs/1339939
Title:
[Lenovo ThinkPad T400] intel graphics fail after suspend with 3.16
kernel
Status in The Linux Kernel:
Incomplete
Status in “linux” package in Ubuntu:
Incomplete
Bug description:
After resuming from suspend, I find gnome-shell has crashed. If I try
to restart gnome-shell or gdm after this all I get is the following
message. Everything does work fine on initial boot up until I suspend.
intel_do_flush_locked failed: Invalid argument
Booting on the 3.13 kernel from trusty, this problem does not occur.
I also tried to test utopic dailly Ubuntu GNOME, this fails to even
boot too gdm, unless I set nomodeset from the kernel line. I have
never need to do this in the past though.
ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: linux-image-3.15.0-6-generic 3.15.0-6.11
ProcVersionSignature: Ubuntu 3.15.0-6.11-generic 3.15.0
Uname: Linux 3.15.0-6-generic x86_64
ApportVersion: 2.14.4-0ubuntu1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: darkness 2770 F.... pulseaudio
CurrentDesktop: GNOME
Date: Thu Jul 10 10:04:38 2014
HibernationDevice: RESUME=UUID=80ccdbf4-2eec-47cd-aac0-5d90ab898481
MachineType: LENOVO 2764CTO
PccardctlIdent:
Socket 0:
no product info available
PccardctlStatus:
Socket 0:
no card
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.15.0-6-generic root=UUID=70836e80-816b-424b-8aaf-6a0d2863fa50 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.15.0-6-generic N/A
linux-backports-modules-3.15.0-6-generic N/A
linux-firmware 1.132
SourcePackage: linux
UpgradeStatus: Upgraded to utopic on 2014-01-05 (185 days ago)
dmi.bios.date: 02/13/2009
dmi.bios.vendor: LENOVO
dmi.bios.version: 7UET61WW (2.07 )
dmi.board.name: 2764CTO
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr7UET61WW(2.07):bd02/13/2009:svnLENOVO:pn2764CTO:pvrThinkPadT400:rvnLENOVO:rn2764CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 2764CTO
dmi.product.version: ThinkPad T400
dmi.sys.vendor: LENOVO
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References