older ATI mobility chipset support

[Gerrit Kuehn]

Hi all,

I have an old notebook I didn't use for some time (I think it used
to work fine under 11.1 in 2018, now I'm trying to run 11.4 after some
upgrading). When trying to "startx" after booting or trying to load
"radeonkms", the machine crashes with something weird happening on the
screen (it really slowly goes white with clouds, looks quite
phychodelic ;-).

The graphics identifies as "RV250/M9 GL [Mobility FireGL 9000/Radeon
9000]". I'm not sure if this is supposed to work with anything (but it
did in 2018).
https://wiki.freebsd.org/Graphics/AMD-GPU-Matrix lists "Radeon 9000" and
"RV250" as supported, but I'm unsure if this is meant to include the
Mobility variant above. If not, are there any other options? As
mentioned, just starting X (without trying to load radeonkms in
advance) crashed quite the same way...


cu
  Gerrit