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Bug 1290886 - [i915] WARNING drivers/gpu/drm/i915/intel_display.c:1880 vlv_wait_port_ready+0x121/0x160
[i915] WARNING drivers/gpu/drm/i915/intel_display.c:1880 vlv_wait_port_ready...
Product: Fedora
Classification: Fedora
Component: xorg-x11-drv-intel (Show other bugs)
Unspecified Unspecified
unspecified Severity unspecified
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Assigned To: Adam Jackson
Fedora Extras Quality Assurance
Depends On:
  Show dependency treegraph
Reported: 2015-12-11 14:04 EST by Chris Murphy
Modified: 2016-12-20 11:56 EST (History)
2 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2016-12-20 11:56:07 EST
Type: Bug
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
dmesg (88.86 KB, text/plain)
2015-12-11 14:04 EST, Chris Murphy
no flags Details
lspci (23.57 KB, text/plain)
2015-12-11 14:30 EST, Chris Murphy
no flags Details
dmesg2 (39.11 KB, text/plain)
2015-12-12 13:55 EST, Chris Murphy
no flags Details

  None (edit)
Description Chris Murphy 2015-12-11 14:04:22 EST
Created attachment 1104759 [details]

Description of problem:

I unplugged a USB keyboard on an Intel NUC and got a series of call traces related to i915. NUC is connected to a display via HDMI but the display was off at the time, the NUC was being used effectively headless.

Version-Release number of selected component (if applicable):

How reproducible:
Rebooted with the keyboard attached, waited a few minutes, removed it. No trace.

Steps to Reproduce:

Actual results:

See dmesg.

[40721.305434] usb 1-1: USB disconnect, device number 2
[40721.305464] usb 1-1.2: USB disconnect, device number 4
[40722.513280] ------------[ cut here ]------------
[40722.513428] WARNING: CPU: 3 PID: 28943 at drivers/gpu/drm/i915/intel_display.c:1880 vlv_wait_port_ready+0x121/0x160 [i915]()
[40722.513435] timed out waiting for port D ready: got 0xf, expected 0x0

Expected results:

Additional info:
Comment 1 Chris Murphy 2015-12-11 14:30 EST
Created attachment 1104787 [details]
Comment 2 Chris Murphy 2015-12-12 13:55 EST
Created attachment 1105132 [details]

Plugged the keyboard in maybe an hour after a reboot, same traceback. And it kills the display (HDMI) as well, so not good.
Comment 3 Fedora End Of Life 2016-11-24 09:10:26 EST
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Comment 4 Fedora End Of Life 2016-12-20 11:56:07 EST
Fedora 23 changed to end-of-life (EOL) status on 2016-12-20. Fedora 23 is
no longer maintained, which means that it will not receive any further
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