05-16-2020, 10:34 PM
(05-16-2020, 03:33 PM)manawyrm Wrote: True.
I have encountered this same issue on my own PBP in the past and saw that there are enormous amounts of sysrq's happening when audio is played back at the highest volume levels.
These have caused stuttering, lockups, hard reboots and other weird behaviour.
That's not unexpected if you look at the list of available sysrqs:
https://www.kernel.org/doc/html/latest/a...mmand-keys
Sysrqs are triggered over procfs or keyboard combinations. There are not obvious further callers https://elixir.bootlin.com/linux/v5.6.13...ndle_sysrq
How have you traced invocations of sysrqs?
(05-16-2020, 03:33 PM)manawyrm Wrote: For example "c" would produce this same output as shown Dendrocalamus64:
"Will perform a system crash by a NULL pointer dereference."
That's why I wrote "without the backtrace it's not obvious if that was triggered by sysrq". The backtrace would show sysrq() ... or not. When Dendrocalamus64 had the 0 pointer dereference, they was not using audio, though.
