Bug 1897251

Summary: Nouveau driver timeout when removing/inserting DisplayPort or HDMI
Product: [Fedora] Fedora Reporter: Mark Pearson <mpearson>
Component: kernelAssignee: Kernel Maintainer List <kernel-maint>
Status: CLOSED DUPLICATE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: unspecified    
Version: 33CC: acaringi, adscvr, airlied, bskeggs, hdegoede, itamar, jarodwilson, jeremy, jglisse, jonathan, josef, kernel-maint, lgoncalv, linville, masami256, mchehab, mjg59, ptalbert, steved
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
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Clone Of: Environment:
Last Closed: 2020-12-16 13:57:37 UTC Type: Bug
Regression: --- Mount Type: ---
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Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 1816768    
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Description Flags
Kernel log
none
Video of steps - in case it is useful none

Description Mark Pearson 2020-11-12 15:54:31 UTC
Created attachment 1728800 [details]
Kernel log

1. Please describe the problem:
Using P1G3 connected to TBT dock and when you unplug/plug the DisplayPort or HDMI connection the nouveau driver times out and the external display can't be made to work.

2. What is the Version-Release number of the kernel: 5.8.17

3. Did it work previously in Fedora? If so, what kernel version did the issue
   *first* appear?  Old kernels are available for download at
   https://koji.fedoraproject.org/koji/packageinfo?packageID=8 :
I don't think it worked previously.

4. Can you reproduce this issue? If so, please provide the steps to reproduce
   the issue below:
Yes:
Reboot, with DP in and HDMI out
Unplug the Display Port adapter
Plug in the HDMI (or DP again) and confirm it's broken

I'll attach a video of it bring reproduced by the PA team, as it helped me confirm by following the same sequence

5. Does this problem occur with the latest Rawhide kernel? To install the
   Rawhide kernel, run ``sudo dnf install fedora-repos-rawhide`` followed by
   ``sudo dnf update --enablerepo=rawhide kernel``:
Don't know.

6. Are you running any modules that not shipped with directly Fedora's kernel?:
No

7. Please attach the kernel logs. You can get the complete kernel log
   for a boot with ``journalctl --no-hostname -k > dmesg.txt``. If the
   issue occurred on a previous boot, use the journalctl ``-b`` flag.
Attached

Comment 1 Mark Pearson 2020-11-12 15:55:46 UTC
Created attachment 1728802 [details]
Video of steps - in case it is useful

Comment 2 Mark Pearson 2020-12-16 13:57:37 UTC

*** This bug has been marked as a duplicate of bug 1902798 ***