Bug 202863 - PC resumes from S3 as soon TV powers on
Summary: PC resumes from S3 as soon TV powers on
Status: RESOLVED MOVED
Alias: None
Product: Power Management
Classification: Unclassified
Component: Hibernation/Suspend (show other bugs)
Hardware: Intel Linux
: P1 normal
Assignee: Rafael J. Wysocki
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2019-03-11 13:04 UTC by Marc Riedel
Modified: 2019-03-26 13:59 UTC (History)
2 users (show)

See Also:
Kernel Version: 5.0
Subsystem:
Regression: No
Bisected commit-id:

Attachments
Output of hwinfo (552.81 KB, text/plain)
2019-03-11 13:04 UTC, Marc Riedel 		Details
DSDT (1.32 MB, text/x-csrc)
2019-03-11 13:06 UTC, Marc Riedel 		Details
Add an attachment (proposed patch, testcase, etc.)

Description Marc Riedel 2019-03-11 13:04:03 UTC 
Created attachment 281701 [details]
Output of hwinfo

Hi,

when the PC is sleeping and the TV gets powered on it resumes from S3.
The board is an ASROCK Z370 Gaming-ITX ac with newest BIOS (3.30).

I've narrowed it down to the HDMI connection between TV and IGP.

Test:

- Unload iwlwifi and btusb module, so PC can't be waken through WiFi or Bluetooth.
- Suspend PC (S3).
- During sleep disconnect all external connectors (except HDMI and power).
- Power on TV

Result:

PC powers on

Do the same as above, but also disconnect HDMI, and the PC sleeps on.
There is no feature in the BIOS which refers to "Wake On TV" - like Intel NUC series.

I've selectively disabled all wake up sources and succeeded with disabling XHC.
I don't understand why HDMI/LSPCon is somehow connected to USB wake up.

I'd like to wake the PC via USB keyboard, but of course this doesn't work when disabling XHC as wake up source.

Best regards

Marc
Comment 1 Marc Riedel 2019-03-11 13:06:10 UTC 
Created attachment 281703 [details]
DSDT
Comment 2 Zhang Rui 2019-03-26 13:59:01 UTC 
please file a bug at freedesktop instead.
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