On Fri, Jun 04, 2021 at 12:18:58AM -0500, Bob Tracy wrote: > On Thu, Jun 03, 2021 at 03:15:05PM +0200, Maciej W. Rozycki wrote: > > I have lost track about this issue, so please fill me in as to whether > > the offending commit causing the regression has been bisected or not. > > It has. Michael Cree reported the following back on April 5th: > > And the first bad commit is: > > 0fe3cf3a53b5c1205ec7d321be1185b075dff205 is the first bad commit > commit 0fe3cf3a53b5c1205ec7d321be1185b075dff205 > Author: Christian König <christian.koenig@xxxxxxx> > Date: Sat Oct 24 13:12:23 2020 +0200 > > drm/radeon: switch to new allocator v2 > > It should be able to handle all cases here. > > v2: fix debugfs as well > > Signed-off-by: Christian König <christian.koenig@xxxxxxx> > Reviewed-by: Dave Airlie <airlied@xxxxxxxxxx> > Reviewed-by: Madhav Chauhan <madhav.chauhan@xxxxxxx> > Tested-by: Huang Rui <ray.huang@xxxxxxx> > Link: https://patchwork.freedesktop.org/patch/397088/?series=83051&rev=1 > > :040000 040000 4e643ef861b921392bc67be21a42298c91c7ff7a b36453567c3176a3cd50fa0b23886b0fd642560d M drivers There were a few follow-up messages in this thread that left me with the impression there *may* have been a patch submitted, although Christian complained at the time he was having problems locating Alpha hardware to test with. The current (5.12.0 kernel) problem symptoms show some "improvement". I at least got to the point that the login screen displayed, but it had a bit of pixelation/distortion in a few areas indicative of "bad things about to happen". Then I got the expected system lock-up, just as I originally reported: had to hit the reset switch to recover. --Bob