Re: DRM and Radeon

W dniu 26.01.2021 o 08:58, Graham Perrin pisze:
> On 26/01/2021 07:02, Alexey Dokuchaev wrote:
> 
> 
>  > Re: loading drm crashes system
> 
> 
>  > … There are known issues with Radeon cards, they were quite well
>  > supported a year ago, then something got broken. I've promised to
>  > bisect this and find the cause, but there were several
>  > syscall-related changes in -CURRENT though the course of the last
>  > year, so bisecting just the kernel is not enough (machine won't get
>  > to login prompt if the userland does not match), which cripples the
>  > process.
>  >
>  > I still intend to take this quest, just not sure when. :(
>  >
>  > ./danfe
> 
> 
> Any cards in particular?
> 
> <https://old.reddit.com/r/freebsd/comments/kyoxmc/freebsd_quarterly_status_report_fourth_quarter/gjiw3y3/> 
> – whilst I didn't mention Radeon there, for me it _was_ the Radeon story 
> that seemed to improve a few months ago.
> 
> <https://bsd-hardware.info/?id=pci:1002-6841-103c-17a9> AMD Thames 
> [Radeon HD 7550M/7570M/7650M]



For example old RS880 [Radeon HD 4200]. After deprecation of 
graphics/drm-fbsd12.0-kmod I found that it is still supported fine on 
12-STABLE with legacy /boot/kernel/radeonkms.ko from the base. While 
trying the driver from graphics/drm-fbsd12.0-kmod I was not able to use 
this card with gdm, only startx or x11/slim worked. On 13-ALPHA this 
card still works fine with deprecated graphics/drm-legacy-kmod.


-- 
Marek Zarychta