[SOLVED] Current 32bit i915 and mesa 23.0

LuckyCyborg · 04-03-2023, 04:21 AM

Quote:

Originally Posted by keithpeter

Thankyou for reply.

Current updated to 31st March with mesa 23.0.1

Based on the archwiki page you linked to I made a ~/.drirc file like this...

Code:

bash-5.2$ cat .drirc
<driconf>
    <device driver="i915">
        <application name="Default">
            <option name="stub_occlusion_query" value="true" />
            <option name="fragment_shader" value="true" />
        </application>
    </device>
</driconf>

The result of your suggested glxinfo command is this...

Code:

bash-5.2$ glxinfo | grep OpenGL
libGL error: did not find extension DRI_Mesa version 1
libGL error: failed to load driver: i915
OpenGL vendor string: Mesa
OpenGL renderer string: llvmpipe (LLVM 16.0.0, 128 bits)
OpenGL core profile version string: 4.5 (Core Profile) Mesa 23.0.1
OpenGL core profile shading language version string: 4.50
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
OpenGL version string: 4.5 (Compatibility Profile) Mesa 23.0.1
OpenGL shading language version string: 4.50
OpenGL context flags: (none)
OpenGL profile mask: compatibility profile
OpenGL extensions:
OpenGL ES profile version string: OpenGL ES 3.2 Mesa 23.0.1
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.20
OpenGL ES profile extensions:
bash-5.2$

From which I conclude that mesa-23.0 is not supporting my graphics card and that applications that require accelerated graphics are falling back to llvmpipe software rendering.

Firefox and xpdf from current-20230331 are giving the familiar error messages that I noted at the beginning of this post. However firefox seems to be less 'jumpy' and does not saturate a core on www.bbc.co.uk/news as I saw at first so some improvement.

Something is wrong with your graphics stack, becuse you use the LLVMpipe as driver, which is slow software rendering.

Please show me the output of dmesg and your Xorg.log

keithpeter · 04-03-2023, 12:03 PM

Quote:

Originally Posted by basharx

It could also be a Mesa 23.x problem, I don't get the libGL error on a Slackware 15.0 32-bit/945GM with Mesa 21.3.5 (which reports OpenGL version 2.1).

Yes, I first noticed the issue with the mesa-23 upgrade that arrived in the 22nd March update. It reverted to 'normal' (i.e. what I see with Slackware 15.0 and 14.2) when I downgraded to the mesa-21.3.5 package from Slackware 15.0.

I've noticed that the most recent mesa-23 update has 'calmed' Firefox down a bit even with llvmpipe rendering.

I'll have to downgrade again to 21.3.5 and run the glxinfo command to see what OpenGL is reported. I think it was 1.4. I'll edit this post then.

Edit: below using mesa-21.3.5 binary from Slackware 15.0 iso after using upgradepkg and rebooting.

Code:

bash-5.2$ glxinfo | grep OpenGL
OpenGL vendor string: Intel Open Source Technology Center
OpenGL renderer string: Mesa DRI Intel(R) 945GM x86/MMX/SSE2
OpenGL version string: 1.4 Mesa 21.3.5
OpenGL extensions:
OpenGL ES profile version string: OpenGL ES 2.0 Mesa 21.3.5
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 1.0.16
OpenGL ES profile extensions:
bash-5.2$

keithpeter · 04-03-2023, 12:17 PM

Quote:

Originally Posted by LuckyCyborg

Something is wrong with your graphics stack, becuse you use the LLVMpipe as driver, which is slow software rendering.

Please show me the output of dmesg and your Xorg.log

Thanks for interest and I have attached the log files as they are long. The error messages you highlighted in red are the ones I was asking about when I started the thread.

Xorg2.log is the log after removing the ~/.drirc file I added based on an example from the Arch Wiki referenced in Post 13 in this thread. Output from glxinfo is below

Code:

bash-5.2$ glxinfo | grep OpenGL
libGL error: did not find extension DRI_Mesa version 1
libGL error: failed to load driver: i915
OpenGL vendor string: Mesa
OpenGL renderer string: llvmpipe (LLVM 16.0.0, 128 bits)
OpenGL core profile version string: 4.5 (Core Profile) Mesa 23.0.1
OpenGL core profile shading language version string: 4.50
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
OpenGL version string: 4.5 (Compatibility Profile) Mesa 23.0.1
OpenGL shading language version string: 4.50
OpenGL context flags: (none)
OpenGL profile mask: compatibility profile
OpenGL extensions:
OpenGL ES profile version string: OpenGL ES 3.2 Mesa 23.0.1
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.20
OpenGL ES profile extensions:

dmesg-fresh.txt is the output of dmesg after a fresh boot at console (I'm using startx to start xfce4).

Hardware runs fine (within the limitations of a 17 year old laptop) on Slackware 15.0 and 14.2 before that so I think the electronics is still ok.