OpenGL issues on HD 2500 since linux 5.10.13

Hello! I have an issue with OpenGL having some weird rendering issues since Linux 5.10.13 on HD 2500 (Ivy Bridge)

Distro: Arch Linux

If any other information is needed I'm happy to provide them

changed the description

I was reporting this issue on Arch Linux Bug Tracker and with the help of other people using (git bisect and compiling over and over the kernel!) identified the commit, that from then, Rendering has problems. Maybe this helps.

520d05a77b2866eb4cb9e548e1d8c8abcfe60ec5 is the first bad commit
commit 520d05a77b2866eb4cb9e548e1d8c8abcfe60ec5
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Sun Jan 17 09:30:15 2021 +0000

    drm/i915/gt: Clear CACHE_MODE prior to clearing residuals
    
    commit ef99a60ffd9b918354e038bc5e61f007ff7e901d upstream.
    
    Since we do a bare context switch with no restore, the clear residual
    kernel runs on dirty state, and we must be careful to avoid executing
    with bad state from context registers inherited from a malicious client.
    
    Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/2955
    Fixes: 09aa9e45863e ("drm/i915/gt: Restore clear-residual mitigations for Ivybridge, Baytrail")
    Testcase: igt/gem_ctx_isolation # ivb,vlv
    Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
    Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
    Cc: Akeem G Abodunrin <akeem.g.abodunrin@intel.com>
    Reviewed-by: Akeem G Abodunrin <akeem.g.abodunrin@intel.com>
    Link: https://patchwork.freedesktop.org/patch/msgid/20210117093015.29143-1-chris@chris-wilson.co.uk
    (cherry picked from commit ace44e13e577c2ae59980e9a6ff5ca253b1cf831)
    Signed-off-by: Jani Nikula <jani.nikula@intel.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

 drivers/gpu/drm/i915/gt/gen7_renderclear.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

Also this is my lshw for display:

        *-display
             description: VGA compatible controller
             product: 3rd Gen Core processor Graphics Controller
             vendor: Intel Corporation
             physical id: 2
             bus info: pci@0000:00:02.0
             version: 09
             width: 64 bits
             clock: 33MHz
             capabilities: msi pm vga_controller bus_master cap_list rom
             configuration: driver=i915 latency=0
             resources: irq:31 memory:f0000000-f03fffff memory:e0000000-efffffff ioport:3000(size=64) memory:c0000-dffff

I just commented the changes made in the drm/i915/gt: Clear CACHE_MODE prior to clearing residuals commit, and compiled kernel 5.12.0-rc8 and the problem is gone.

There is definitely a problem here that I'm not understanding because of not being a kernel developer Or a graphics card driver developer.

Can you please help @ickle to fix this issue?

I can go and uncomment those 12 lines, line by line to find it more specifically, but I fear to break something, etc.

my_custom_patch_file.patch

Check #3081 (closed), I've narrowed it down there some more, but according to Intel, this code shouldn't even be able to cause an issue, so the underlying bug might be somewhere else.

I compiled it with your patch and it's solving the issue. Thanks

You can try https://patchwork.freedesktop.org/patch/420436/?series=86947&rev=1 or use

echo off | sudo tee /sys/modules/i915/parameters/migitations

until we have it resolved and backported.

I tried the command, there were some typos so i fixed them echo off | sudo tee /sys/module/i915/parameters/mitigations The issue still occurs, I don't know how to apply patches but I'll ask a friend to help me.

If it's occurring with mitigations=off, then it is unrelated.

I'm compiling the 5.10.14 kernel with the patch you provided. I Will tell you if it fixes the issue (Probably tomorrow, 1 AM here and I just started the compilation)

@ickle Did you see my comment about the git bisect result? do you think it's unrelated?

I did install the patched kernel and the problem is not solved, also tried echo off | sudo tee /sys/module/i915/parameters/mitigations, no changes

Is there anything more I can do to fix this issue?

changed title from OpenGL issues on HD 2500 since linux 5.10.12 to OpenGL issues on HD 2500 since linux 5.10.13

changed the description

Any updates on this? It's really annoying me that I cannot update from kernel 5.10.12 and the problem is not fixed even in 5.12-rc1

I really am happy to provide any more info or test, but I don't know what more I can do. Maybe coding? Changing the changes of the 520d05a77b2866eb4cb9e548e1d8c8abcfe60ec5 one by one to see which one causes it? I don't have any idea how graphic cards work so I'm afraid a little bit to do that. Any help to fix this is so appreciated :(

I have the problem even on 5.12.rc8. What can I do to provide information about that problem?

mentioned in issue #3081 (closed)

mentioned in issue #3404 (closed)

I confirm the problem on kernel 5.10.13 and newer. I hope someday it will be fixed.

Having the same issue on a intel bay-trail system j2900. Linux kernel versions lower than 5.10.12 work just fine on Debian bullseye/testing. This kernel version should not be shipped when this is out of testing phase. Hope this is fixed soon. Been using linux since 2015. I believe this is effecting ivy bridge cpus with the intel hd 2500 and 4000 igpu respectively. Surprisingly my old intel gma 950 hasn’t had issues on my other work computer.

mentioned in commit nouveau@929b734a

mentioned in commit nouveau@023dfa96

This should solve this:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/gpu/drm/i915/gt/gen7_renderclear.c?id=023dfa9602f561952c0e19d74f66614a56d7e57a

#3081 (comment 928867)

The patch is integrated into the 5.12.6 kernel (for arch linux at least). @srett @molaeiali and others, thanks, good work!

mentioned in commit nouveau@585d8425

mentioned in commit nouveau@9d950576

Issue has been fixed, just tested latest kernel version, it works.