Bug 187761 - Nvidia GPU unusable after suspend.
Summary: Nvidia GPU unusable after suspend.
Status: NEW
Alias: None
Product: Drivers
Classification: Unclassified
Component: Video(DRI - non Intel) (show other bugs)
Hardware: Intel Linux
: P1 normal
Assignee: drivers_video-dri
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2016-11-15 11:13 UTC by eke2152
Modified: 2016-11-16 01:32 UTC (History)
1 user (show)

See Also:
Kernel Version: 4.8
Subsystem:
Regression: No
Bisected commit-id:

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2016-11-15 11:13 UTC, eke2152 		Details
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Description eke2152 2016-11-15 11:13:50 UTC 
Created attachment 244591 [details]
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Asus Laptop X555UQ Specs:
i5-6200U, nvidia 940MX, 4GB RAM, Realtek RTL8723BE PCI-E NIC card

I tried with various distros with kernel 4.8, 4.9rc4-5, linux boots ok and runs ok. But after an S3 cycle nvidia gpu becomes unusable and when trying to use it system freezes. So here is what i do.

DRI_PRIME=1 glxgears --> works ok nvidia power on when exiting power off
Suspend-resume
After resume dmesg log says "nouveau failed to idle channel 0 [DRM]"
DRI_PRIME=1 glxgears --> system freeze it doesn't even respond magic keys.

When freezed i power off with power button after that there is a strange issue, PC power offs instead of sleep so i reflashed the BIOS and problem solved.

Also i tried with proprietary drivers same issue.
(It says "failed to copy vbios to system memory" after suspend and freeze.)
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