Bug 99779 - Lenovo Thinkpad E450 (Kaveri A6-7000 Radeon R4) Blank Screen after suspend (displayport link issues)
Summary: Lenovo Thinkpad E450 (Kaveri A6-7000 Radeon R4) Blank Screen after suspend (d...
Status: NEW
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/AMDgpu (show other bugs)
Version: XOrg git
Hardware: x86-64 (AMD64) Linux (All)
: medium critical
Assignee: Default DRI bug account
QA Contact:
Depends on:
Reported: 2017-02-12 14:34 UTC by Kyle Brooks
Modified: 2018-12-10 21:02 UTC (History)
1 user (show)

See Also:
i915 platform:
i915 features:

dmesg 4.9.8 (70.03 KB, text/x-log)
2017-02-12 14:34 UTC, Kyle Brooks
no flags Details
Xorg log (25.00 KB, text/x-log)
2017-02-12 14:35 UTC, Kyle Brooks
no flags Details

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Description Kyle Brooks 2017-02-12 14:34:43 UTC
Created attachment 129527 [details]
dmesg 4.9.8

If I shut my laptop lit it suspends, then when opening the lid and resuming I get a blank screen and am unable to get the display to work again unless I reboot.  I can ssh into computer and I get displayport link errors in the attached dmesg log.

This issue does not occur if I use the radeon kernel module instead of amdgpu.

This seems very similar to bug 90320 but I filed this one because it is amdgpu not radeon:

I've also attached the Xorg.0.log but it does not have any errors indicated.  It indicates successful exit because I stopped the server over ssh and tried to restart gdm a few times which is why there are multiple displayport link status failed messages in dmesg.
Comment 1 Kyle Brooks 2017-02-12 14:35:36 UTC
Created attachment 129528 [details]
Xorg log

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