Felix Miata composed on 2020-03-25 19:30 (UTC-0400): > Alex Deucher composed on 2020-03-25 13:22 (UTC-0400):
>> Felix Miata wrote: >>> 01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. >>> [AMD/ATI] RV200 [Radeon 7500/7500 LE] [1002:5157] >>> Debian Buster and Mageia 7 are OK, but with Fedora 30 and Tumbleweed with >>> kernels newer than 5.3.x, solid background and mouse pointer are all that >>> paint properly: http://fm.no-ip.com/SS/rv200corrupt.png >>> Is this a known problem? If not, whose bug tracker do I file this on, and >>> which component? >> Can you bisect? The relevant radeon code in all of these components >> hasn't really been touched in ages. Maybe related to this: >> https://lkml.org/lkml/2019/12/14/263 >> but that was kernel 5.4 not 5.3. > I spent a bunch of time looking for in between kernels to try. In the process > I > tried also with RV250 and RV380 without being able to repro. Eventually I > stumbled > onto radeon.agpmode=-1, which worked around the corruption well enough on > Fedora > and Tumbleweed. > I got luckier and found after reading your lkml URL > https://bugs.mageia.org/show_bug.cgi?id=26237 > reported against kernel-desktop-5.5.4-1.mga7-1-1.mga7 to produce corrupt Xorg > video described much like observed here. That bug reports fixed with > kernel-desktop-5.5.6-1.mga7. I found and installed 5.5.4 and confirm it's > broken, > and that it's fixed in 5.5.6-2.mga7, which explains why I failed to experience > this in Mageia, where I had jumped from 5.3.13 to 5.4.17. > Apparently whatever Mageia did should be upstreamed if it hasn't been lately. > Fedora's 5.5.10 remains bad. >From Mageia kernel-desktop changelogs: update to 5.5.6 20200312: - work around radeon regression introduced in 5.4 series (mga#26237) * Revert "drm/radeon: simplify and cleanup setting the dma mask" * Revert "drm/radeon: handle PCIe root ports with addressing limitations" update to 5.4.6 20200215: - Revert "drm/radeon: simplify and cleanup setting the dma mask" - Revert "drm/radeon: handle PCIe root ports with addressing limitations" -- Evolution as taught in public schools is religion, not science. Team OS/2 ** Reg. Linux User #211409 ** a11y rocks! Felix Miata *** http://fm.no-ip.com/ _______________________________________________ amd-gfx mailing list amd-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/amd-gfx