https://bugzilla.kernel.org/show_bug.cgi?id=221106
Bug ID: 221106
Summary: [TTM] Buffer eviction failed - associated with screen
freezes with QXL/Spice
Product: Drivers
Version: 2.5
Hardware: All
OS: Linux
Status: NEW
Severity: normal
Priority: P3
Component: Video(DRI - non Intel)
Assignee: [email protected]
Reporter: [email protected]
Regression: No
Hello,
i opened up a bugticket at https://bugzilla.proxmox.com/show_bug.cgi?id=7320 ,
which was closed with the notice, that nobody would probably fix QXL driver
issues anymore.
as we can see, spice qxl is much better quality then virtio:
https://lindi.iki.fi/lindi/qxl/spice_qxl_vs_virtio.webm, so i don't want to
give up that early.
from my suspicion, i'm not sure if this is only a qxl driver issue but not a
memory management / fragmentation issue around TTM, too - as we have these
messages whenever there are freezes:
[ 407.915718] [TTM] Buffer eviction failed
[ 690.692852] hrtimer: interrupt took 5425371 ns
[ 997.482081] [TTM] Buffer eviction failed
[ 1021.034156] [TTM] Buffer eviction failed
[ 2027.215362] input: spice vdagent tablet as /devices/virtual/input/input9
[ 2481.259265] NOTICE: Automounting of tracing to debugfs is deprecated and
will be removed in 2030
[ 3439.716485] [TTM] Buffer eviction failed
i see a lot of development has been with TTM component, too.
in proxmox, i increased virtual qxl/spice graphics card memory from the default
of 16mb to 32mb and things running much more stable/reliable/smoothly with
that, i could not yet trigger longer freezes like with 16mb, so the question
is, what happens here and why - and could perhapssomeone with deeper knowledge
have a look on what's happening here and what's causing the buffer eviction
failures. the happen in sync with the gui freezes.
thank you
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