On Thu, May 20, 2021 at 08:53:14AM +1000, Jonathan Gray wrote:
> On Wed, May 19, 2021 at 06:32:01PM +0200, Peter N. M. Hansteen wrote:
> > On Wed, May 19, 2021 at 04:43:44PM +0200, Peter N. M. Hansteen wrote:
> > > > outdated...)
> > > 
> > > I tried the first, that only seemed to have the effect of having
> > > the freeze come faster. So I commented out that part of the xorg.conf
> > > and I'm trying the steps in the README now, but for some reasons I
> > > don't get any dumps in /var/crash as expected. Then again I could well
> > > be missing some crucial step.
> > 
> > Still no luck getting coredumps but when I sshed in after the last freeze
> > the last two lines of dmesg were 
> > 
> > [drm] *ERROR* ring sdma0 timeout, signaled seq=110053, emitted seq=110053
> > [drm] *ERROR* Process information: process  pid 0 thread  pid 0
> > 
> > the [drm] part has me suspect this is related (but I don't know what sdma
> > signifies in this context)
> 
> sdma is the asynchronous System DMA engine
> 
> Ring timeouts like this are a known problem with amdgpu which persist
> across multiple major drm versions.

Looking at what appears in the log (/var/log/messages) the time when X
freezes corresponds very well with when those messages are recorded.

The question is, how do I usefully debug this? I've gone over the README's 
procedure a few times now and it unfortunately does not produce any coredumps
or traces.

One option is of course to trade up or sideways to something like
https://www.power.no/data-og-tilbehoer/pc-og-mac/baerbar-pc/asus-zenbook-s-ux393ea-pure2-13-laptop/p-1115705/
(Intel Core i7-1165G7 with Iris Xe graphics), but would that have a better
chance of success (or for that matter be helpful to the project)?

All the best,
Peter

-- 
Peter N. M. Hansteen, member of the first RFC 1149 implementation team
http://bsdly.blogspot.com/ http://www.bsdly.net/ http://www.nuug.no/
"Remember to set the evil bit on all malicious network traffic"
delilah spamd[29949]: 85.152.224.147: disconnected after 42673 seconds.

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