* Question: Assessing cause of PM issue on Ubuntu
@ 2017-05-28 16:25 Matthew Giassa
0 siblings, 0 replies; only message in thread
From: Matthew Giassa @ 2017-05-28 16:25 UTC (permalink / raw)
To: linux-pm
Good day,
I'm testing out kernel 4.12.0-rc2
(56fff1bb0f31358bf81a3c64a8dcd6da0dc44263) on an Ubuntu 16.04.2 LTS
machine (fresh install), with suspend and hibernation disabled. With
this kernel, if I allow the monitor to go into standby mode, I am not
able to "wake up" the monitor. Mouse and keyboard activity triggers the
LED to change from "standby/orange" to "ready/green" for a few seconds,
but then re-enters standby mode. The only way to regain use of the
machine locally is to drop to a virtual console via CTRL+ALT+F1, login,
"startx".
Is there a preferred VM/testbench to assess if this is an Ubuntu issue
as opposed to a Linux PM issue before filing a bug report. Also, is
there a standard set of logs/dumps that would be helpful for debugging?
I've checked existing docs on basic PM debugging [1], but couldn't find
anything related to this use case.
Cheers!
1. "Debugging hibernation and suspend",
<https://github.com/torvalds/linux/blob/master/Documentation/power/basic-pm-debugging.txt>,
Last accessed 2017-05-28.
--
-Matthew
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