[Bug 234634] x11-drivers/xf86-video-ati not working under 12.0

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=234634

--- Comment #5 from [email protected] <[email protected]> ---
i)

I do not quite understand what is meant by kernel driver - the only driver I
know of is the graphics driver (which I flip between radeon and vesa). If you
need something else by 'kernel driver', kindly tell me how to get it.

As for the command output, I have the following when I use radeon as the driver
in xorg.conf.

a) kldstat -v | grep drm:

                119 drmn/fbd
                542 drmn/radeon_atom_hw_i2c
                540 drm/radeon_hw_i2c
                538 drmn/radeon_iicbb
30    1 0xffffffff83014000    45070 drm2.ko (/boot/kernel/drm2.ko)
                533 drmn/drm_iic_dp_aux
                534 drmn

b) kldstat -v | grep radeon:

29    1 0xffffffff82f3f000    d4e68 radeonkms.ko (/boot/kernel/radeonkms.ko)
                542 drmn/radeon_atom_hw_i2c
                537 vgapci/radeonkms
                541 radeon_hw_i2c/iicbus
                539 radeon_iicbb/iicbb
                540 drm/radeon_hw_i2c
                538 drmn/radeon_iicbb
34    1 0xffffffff83060000     12f9 radeonkmsfw_CAICOS_pfp.ko
(/boot/kernel/radeonkmsfw_CAICOS_pfp.ko)
                543 radeonkmsfw_CAICOS_pfp_fw
35    1 0xffffffff83062000     16f7 radeonkmsfw_CAICOS_me.ko
(/boot/kernel/radeonkmsfw_CAICOS_me.ko)
                544 radeonkmsfw_CAICOS_me_fw
36    1 0xffffffff83064000      d73 radeonkmsfw_BTC_rlc.ko
(/boot/kernel/radeonkmsfw_BTC_rlc.ko)
                545 radeonkmsfw_BTC_rlc_fw
37    1 0xffffffff83065000     5f97 radeonkmsfw_CAICOS_mc.ko
(/boot/kernel/radeonkmsfw_CAICOS_mc.ko)
                546 radeonkmsfw_CAICOS_mc_fw
============================================

ii)

I do not use rc.conf::kld_list - I load kld via rc.local. My rc.local loads
radeonkms

============================================

iii)

I tried running X without xorg.conf. It appears to take radeon on its own, and
the results are the same - X refuses to start with the Xorg log mentioning the
3 "Failed" lines referred in the original post.

I also tried running X with amdgpu as the driver (after kldloading amdgpu). X
refuses to start, complaining of No Screens Found

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