Why is Radeon SI graphics cards not 3D supported?

[johnfante]

It is NOT a complaint

Just curious to why 3D acceleration is not supported on Radeon SI graphics cards on PPC linux. And if there are any signs that this will happend down the road.

It has maybe been covered before and in this case sorry in advance!

Thank you in advance!

[xeno74]

It is NOT a complaint

Just curious to why 3D acceleration is not supported on Radeon SI graphics cards on PPC linux. And if there are any signs that this will happend down the road.

It has maybe been covered before and in this case sorry in advance!

Thank you in advance!

See the following threads:

• R7-250X under LinuxPPC 3D KO
• (X)(L)ubuntu (MATE) 16.04 LTS
• Mesa for Linux PPC

[johnfante]

See the following threads:

• R7-250X under LinuxPPC 3D KO
• (X)(L)ubuntu (MATE) 16.04 LTS
• Mesa for Linux PPC

So in short it is caused by primarly this:

Glamor Crashes on big endian Hardware https://bugs.freedesktop.org/show_bug.cgi?id=99859

The thread is from 2017 and no solution is in sight .... as far as I can read on a quick glance.

Ok. Thank you for the reply . I am keeping my fingers crossed for a solution.

And thank you for all your work for PPC linux.

[xeno74]

Hi All,

If you use a Radeon SI graphics card then please try the following xorg.conf:

/etc/X11/xorg.conf:

Code: Select all

Section "Device"
    Option "UseFBDev" "true"
    Identifier  "Card0"
EndSection

Cheers,
Christian

[johnfante]

Hi All,

If you use a Radeon SI graphics card then please try the following xorg.conf:

/etc/X11/xorg.conf:

Code: Select all

Section "Device"
    Option "UseFBDev" "true"
    Identifier  "Card0"
EndSection

Cheers,
Christian

Will do. Is it important what kernel is used?

[johnfante]

Hi All,

If you use a Radeon SI graphics card then please try the following xorg.conf:

/etc/X11/xorg.conf:

Code: Select all

Section "Device"
    Option "UseFBDev" "true"
    Identifier  "Card0"
EndSection

Cheers,
Christian

I have tested with a fully updated Fienix and kernel 5.3. I am sorry to say that it does not work with a solo Radeon SI card.

Here is the xorg.conf before I rebooted: https://www.dropbox.com/s/1vp6bhcndzl1e ... .jpeg?dl=0

Here is the result: https://www.dropbox.com/s/p16wi7phmxx42 ... .jpeg?dl=0

I can not get past the white screen.

I will try adding my Firepro to see if that helps.

[xeno74]

I have tested with a fully updated Fienix and kernel 5.3. I am sorry to say that it does not work with a solo Radeon SI card.

It works here with a Radeon R7 240 and with the xorg.conf above.

[johnfante]

I have tested with a fully updated Fienix and kernel 5.3. I am sorry to say that it does not work with a solo Radeon SI card.

It works here with a Radeon R7 240 and with the xorg.conf above.

I have a R9 270X 2GB installed in mine. Strange!

The R7 240 and the R9 270X should be the same architecture: https://en.wikipedia.org/wiki/AMD_Radeon_Rx_200_series

[xeno74]

I have a R9 270X 2GB installed in mine. Strange!

The R7 240 and the R9 270X should be the same architecture: https://en.wikipedia.org/wiki/AMD_Radeon_Rx_200_series

Please try the following xorg.conf:

Code: Select all

Section "Device"
    Identifier  "Card0"
    Driver      "fbdev"
EndSection