Bug 1389888 - [i915] [SKL] drm module loops between HDMI connected and disconnected [NEEDINFO]
Summary: [i915] [SKL] drm module loops between HDMI connected and disconnected
Keywords:
Status: CLOSED INSUFFICIENT_DATA
Alias: None
Product: Fedora
Classification: Fedora
Component: kernel
Version: 24
Hardware: x86_64
OS: Linux
unspecified
unspecified
Target Milestone: ---
Assignee: Kernel Maintainer List
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2016-10-29 10:59 UTC by Leo Bergolth
Modified: 2017-04-28 17:20 UTC (History)
7 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2017-04-28 17:20:40 UTC
Type: Bug
jforbes: needinfo?


Attachments (Terms of Use)
dmesg output of loop (drm.debug=255) (47.51 KB, text/plain)
2016-10-29 10:59 UTC, Leo Bergolth
no flags Details
dmesg output while booting (56.82 KB, text/plain)
2016-10-29 11:07 UTC, Leo Bergolth
no flags Details
lspci output (1.46 KB, text/plain)
2016-10-29 11:08 UTC, Leo Bergolth
no flags Details
dmesg output of loop with kernel 4.7.9 and force-options (85.69 KB, text/plain)
2016-10-29 11:09 UTC, Leo Bergolth
no flags Details


Links
System ID Private Priority Status Summary Last Updated
FreeDesktop.org 97958 0 None None None 2016-10-29 10:59:47 UTC

Description Leo Bergolth 2016-10-29 10:59:48 UTC
Created attachment 1215239 [details]
dmesg output of loop (drm.debug=255)

Description of problem:
Sometimes, after it had worked fine for hours, my Intel Skylake graphics starts to loop between HDMI connect and disconnect events. (Of course the TV actually stays connected, although switched off.)

Version-Release number of selected component (if applicable):
kernel-4.7.9-200.fc24.x86_64
kernel-4.7.3-200.fc24.x86_64

How reproducible:
Starts randomly with TV on HDMI connector turned off, without a "real" hotplug event. HDMI stays connected all the time.

Actual results:
The connection state loops between connected and disconnected.

Expected results:
Stays quiet at state connected.

Additional info:
Forcing the output to connected using video=HDMI-A-1:D and a saved EDID block drm_kms_helper.edid_firmware=HDMI-A-1:edid/leo-samsung.bin doesn't disable the hotplug events.

Comment 1 Leo Bergolth 2016-10-29 11:07:24 UTC
Created attachment 1215240 [details]
dmesg output while booting

Comment 2 Leo Bergolth 2016-10-29 11:08:01 UTC
Created attachment 1215241 [details]
lspci output

Comment 3 Leo Bergolth 2016-10-29 11:09:09 UTC
Created attachment 1215242 [details]
dmesg output of loop with kernel 4.7.9 and force-options

Comment 4 Justin M. Forbes 2017-04-11 14:57:51 UTC
*********** MASS BUG UPDATE **************

We apologize for the inconvenience.  There are a large number of bugs to go through and several of them have gone stale.  Due to this, we are doing a mass bug update across all of the Fedora 24 kernel bugs.

Fedora 25 has now been rebased to 4.10.9-100.fc24.  Please test this kernel update (or newer) and let us know if you issue has been resolved or if it is still present with the newer kernel.

If you have moved on to Fedora 26, and are still experiencing this issue, please change the version to Fedora 26.

If you experience different issues, please open a new bug report for those.

Comment 5 Justin M. Forbes 2017-04-28 17:20:40 UTC
*********** MASS BUG UPDATE **************
This bug is being closed with INSUFFICIENT_DATA as there has not been a response in 2 weeks. If you are still experiencing this issue, please reopen and attach the 
relevant data from the latest kernel you are running and any data that might have been requested previously.


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