https://bugs.kde.org/show_bug.cgi?id=435989
--- Comment #16 from Zamundaaa ---
What you can do to debug this further is to enable drm debugging with
> echo 0xFE | sudo tee /sys/module/drm/parameters/debug
and capture the information with
> sudo dmesg -w > dmesg.log
which will write a huge amount
https://bugs.kde.org/show_bug.cgi?id=435989
--- Comment #15 from Simon Redman ---
I spoke too soon :(
I am now able to enable and disable my second Displaylink display which isn't
the configuration described in this bug but also used to not work. However,
with the configuration described in
https://bugs.kde.org/show_bug.cgi?id=435989
--- Comment #14 from Simon Redman ---
> One of my weekend goals is to build kwin so I'll try out those patches you
> mentioned and see if it behaves any better.
I built kwin from master (commit e9fcd9584ef18f910ac18357d660663fd3baf5ce) and
I can
https://bugs.kde.org/show_bug.cgi?id=435989
--- Comment #13 from Simon Redman ---
Created attachment 137920
--> https://bugs.kde.org/attachment.cgi?id=137920=edit
The results of drminfo as described in comment 8 on the "frozen" wayland
session
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Simon Redman changed:
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is obsolete|
https://bugs.kde.org/show_bug.cgi?id=435989
Simon Redman changed:
What|Removed |Added
Attachment #137856|0 |1
is obsolete|
https://bugs.kde.org/show_bug.cgi?id=435989
--- Comment #9 from Simon Redman ---
Created attachment 137916
--> https://bugs.kde.org/attachment.cgi?id=137916=edit
Output of startplasma-wayland run as described in comment 8
Attached output of startplasma-wayland run as described in comment 8
https://bugs.kde.org/show_bug.cgi?id=435989
--- Comment #8 from Zamundaaa ---
Sorry, I should've specified the drminfo command more closely, it only outputs
for GPU 0 by default. Something like this would be most useful (DisplayLink
AFAIK creates a bunch of virtual GPUs):
> drminfo -a -r -c 0 &&
https://bugs.kde.org/show_bug.cgi?id=435989
--- Comment #7 from Simon Redman ---
> What GPU(s) are in the laptop?
There are two hardware GPUs and the "software GPU" which drives the DisplayLink
displays:
Intel HD Graphics 630 (driving the laptop screen and the HDMI screen)
Nvidia GeForce GTX
https://bugs.kde.org/show_bug.cgi?id=435989
--- Comment #6 from Simon Redman ---
Created attachment 137857
--> https://bugs.kde.org/attachment.cgi?id=137857=edit
The results of drminfo on the "frozen" wayland session
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--- Comment #5 from Simon Redman ---
Created attachment 137856
--> https://bugs.kde.org/attachment.cgi?id=137856=edit
The results of drminfo on the working X11 session
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Zamundaaa changed:
What|Removed |Added
Product|plasmashell |kwin
Component|Multi-screen support
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