* Cant resume from sleep on 5.12-rcx regression?
@ 2021-04-10 9:57 Malte Deiseroth
0 siblings, 0 replies; only message in thread
From: Malte Deiseroth @ 2021-04-10 9:57 UTC (permalink / raw)
To: linux-kernel
Hey guys.
I think, maybe I found a regression in 5.12.
TLDK: Screen stays black after resume from sleep on kernel 5.12-rcx but
not on 5.11.12
I compiler a 5.11.12 and a 5.12-rc6 Kernel on my Ubuntu 20.10 T480
Laptop. With the 5.11.12 kernel I can safely boot and put the laptop
into sleep by closing its lid. Up on opening, everything works fine.
However with the 5.12-rc6 (I also tested on rc2 and r4) I can not do
this. After sleeping, the laptop wakes up, but the screen stays black. I
can still ssh into the machine and it works, but I also cant open any
ttys. I tried to gather some logs or any kind of information, but I
don't really know what I'm searching for.
My setup might be slightly out of the ordinary, as I have an dm-crypt
encrypted filesystem with an encrypted swap partition.
I hope I'm not wasting anyone's time here, but from what I understand
about kernel development this should not happen.
All the best
Malte Deiseroth
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2021-04-10 9:57 Cant resume from sleep on 5.12-rcx regression? Malte Deiseroth
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