[Bug 108022] New: Cannot resume from standby - Link training fails - bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ

From: bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org
To: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
Subject: [Bug 108022] New: Cannot resume from standby - Link training fails
Date: Sat, 22 Sep 2018 18:02:51 +0000	[thread overview]
Message-ID: <bug-108022-8800@http.bugs.freedesktop.org/> (raw)

[-- Attachment #1.1: Type: text/plain, Size: 1483 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=108022

            Bug ID: 108022
           Summary: Cannot resume from standby - Link training fails
           Product: xorg
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
          Reporter: barry-RiHDFbPRhGT6V6G2DxALlg@public.gmane.org
        QA Contact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org

Created attachment 141689
  --> https://bugs.freedesktop.org/attachment.cgi?id=141689&action=edit
DMESG with nvkm_dp_train_pattern failure.  At 3468 is the manual re-plug

My computer (X10DAX motherboard, Nvidia GTX 980, dual Xeon E5) fails to come
back if it goes to DPMS standby with:
WARNING: CPU: 3 PID: 8 at drivers/gpu/drm/nouveau/include/nvkm/subdev/i2c.h:170
nvkm_dp_train_pattern+0x12e/0x150 [nouveau]

I am running 4.18.9 of the kernel.

The GTX 980s are hooked to dual Dell P2715Q monitors.  The monitors have a
steady glowing power LED until I attempt to resume by moving the mouse at which
point they say not connected and the power led starts flashing.

If I remove the re-insert the DP cable(s) the monitors come back.

Note that I am doing no suspending nor hibernation.

-- 
You are receiving this mail because:
You are the assignee for the bug.

[-- Attachment #1.2: Type: text/html, Size: 3010 bytes --]

[-- Attachment #2: Type: text/plain, Size: 154 bytes --]

_______________________________________________
Nouveau mailing list
Nouveau@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/nouveau