[Bug 94249] Linux incorrectly detects a Radeon GPU

[Bug 94249] Linux incorrectly detects a Radeon GPU

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=94249

            Bug ID: 94249
           Summary: Linux incorrectly detects a Radeon GPU
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: krejzi@email.com

I've recently got a HP Probook 470 G3 laptop, which has an onboard Intel
Skylake Graphics and an AMD Radeon R7 M340 GPU.

However, the Linux seems to detect the GPU as following:

01:00.0 Display controller [0380]: Advanced Micro Devices, Inc. [AMD/ATI] Topaz
XT [Radeon R7 M260/M265] [1002:6900] (rev 83)                                   

Which makes it a GCN 1.2 GPU which tries to use AMDGPU. That of course doesn't
work. The driver loads, but as soon as it does, it corrupts all the available
data from lspci -v output. I also can't use it with DRI_PRIME, since X server
crashes while loading amdgpu (probably due to it not being an amdgpu supported
GPU).

Wikipedia identifies the mentioned card as GCN 1.0 OLAND GPU. Windows catalyst
also claims it's R7 M340 and not R7 M360.

It's probably a BIOS issue, but can it be worked around somehow?

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[Bug 94249] Topaz GPU not working correctly

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=94249

Alex Deucher <alexdeucher@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Linux incorrectly detects a |Topaz GPU not working
                   |Radeon GPU                  |correctly

--- Comment #1 from Alex Deucher <alexdeucher@gmail.com> ---
The driver is correct.  It is a topaz GPU.  Try disabling runpm (append
amdgpu.runpm=0 on the kernel command line in grub).

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[Bug 94249] Topaz GPU not working correctly

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https://bugs.freedesktop.org/show_bug.cgi?id=94249

--- Comment #2 from Armin K <krejzi@email.com> ---
I'm sorry I didn't reply earlier, I didn't get the mail that there was a reply.

Using runpm=0 didn't change a thing.

I forgot to post the corrupted lspci data as said in the original post:

01:00.0 Display controller [0380]: Advanced Micro Devices, Inc. [AMD/ATI] Topaz
XT [Radeon R7 M260/M265] [1002:6900] (rev ff) (prog-if ff)
        !!! Unknown header type 7f
        Kernel driver in use: amdgpu
        Kernel modules: amdgpu

Without the amdgpu module loaded, it looks as down below (with other options
included with -v).

The X server still crashes when AMDGPU DDX is present. Here's the relevant part
of the Xorg.log:

Mar 01 16:23:34 krejzi /usr/libexec/gdm-x-session[629]: (EE)
Mar 01 16:23:34 krejzi /usr/libexec/gdm-x-session[629]: (EE) Backtrace:
Mar 01 16:23:34 krejzi /usr/libexec/gdm-x-session[629]: (EE) 0:
/usr/libexec/Xorg (OsInit+0x35a) [0x5ca1aa]
Mar 01 16:23:34 krejzi /usr/libexec/gdm-x-session[629]: (EE) 1: /lib/libc.so.6
(killpg+0x40) [0x7f5cfaf453df]
Mar 01 16:23:34 krejzi /usr/libexec/gdm-x-session[629]: (EE) 2:
/usr/lib/libdrm_amdgpu.so.1 (amdgpu_cs_submit+0x333) [0x7f5cf56ff383]
Mar 01 16:23:34 krejzi /usr/libexec/gdm-x-session[629]: (EE) 3:
/usr/lib/libdrm_amdgpu.so.1 (amdgpu_cs_submit+0x3b) [0x7f5cf56ff02b]
Mar 01 16:23:34 krejzi /usr/libexec/gdm-x-session[629]: (EE) 4:
/usr/lib/dri/radeonsi_dri.so (radeon_drm_winsys_create+0x14fad)
[0x7f5cf451e3ed]
Mar 01 16:23:34 krejzi /usr/libexec/gdm-x-session[629]: (EE) 5:
/usr/lib/dri/radeonsi_dri.so (__driDriverGetExtensions_radeonsi+0x45afe1)
[0x7f5cf48ecce1]
Mar 01 16:23:34 krejzi /usr/libexec/gdm-x-session[629]: (EE) 6:
/usr/lib/dri/radeonsi_dri.so (amdgpu_winsys_create+0x18f9) [0x7f5cf450dc59]
Mar 01 16:23:34 krejzi /usr/libexec/gdm-x-session[629]: (EE) 7:
/usr/lib/dri/radeonsi_dri.so (amdgpu_winsys_create+0x5a60) [0x7f5cf4515d80]
Mar 01 16:23:34 krejzi /usr/libexec/gdm-x-session[629]: (EE) 8:
/usr/lib/dri/radeonsi_dri.so (__driDriverGetExtensions_radeonsi+0x45b6ce)
[0x7f5cf48eda8e]
Mar 01 16:23:34 krejzi /usr/libexec/gdm-x-session[629]: (EE) 9:
/usr/lib/dri/radeonsi_dri.so (__driDriverGetExtensions_radeonsi+0x45b448)
[0x7f5cf48ed6d8]
Mar 01 16:23:34 krejzi /usr/libexec/gdm-x-session[629]: (EE) 10:
/usr/lib/dri/radeonsi_dri.so (amdgpu_winsys_create+0xba8) [0x7f5cf450b688]
Mar 01 16:23:34 krejzi /usr/libexec/gdm-x-session[629]: (EE) unw_get_proc_name
failed: no unwind info found [-10]
Mar 01 16:23:34 krejzi /usr/libexec/gdm-x-session[629]: (EE) 11:
/usr/lib/dri/radeonsi_dri.so (?+0xba8) [0x7f5cf4037938]
Mar 01 16:23:34 krejzi /usr/libexec/gdm-x-session[629]: (EE) 12:
/usr/lib/dri/radeonsi_dri.so (__driDriverGetExtensions_radeonsi+0x2f81cf)
[0x7f5cf462722f]
Mar 01 16:23:34 krejzi /usr/libexec/gdm-x-session[629]: (EE) 13:
/usr/lib/dri/radeonsi_dri.so (__driDriverGetExtensions_radeonsi+0x2f5269)
[0x7f5cf4621269]
Mar 01 16:23:34 krejzi /usr/libexec/gdm-x-session[629]: (EE) 14:
/usr/lib/libgbm.so.1 (gbm_surface_has_free_buffers+0xcfb) [0x7f5cf54f38cb]
Mar 01 16:23:34 krejzi /usr/libexec/gdm-x-session[629]: (EE) 15:
/usr/lib/libgbm.so.1 (gbm_surface_has_free_buffers+0xe8) [0x7f5cf54f2108]
Mar 01 16:23:34 krejzi /usr/libexec/gdm-x-session[629]: (EE) 16:
/usr/lib/libgbm.so.1 (gbm_create_device+0xa4) [0x7f5cf54f1dc4]
Mar 01 16:23:34 krejzi /usr/libexec/gdm-x-session[629]: (EE) 17:
/usr/lib/xorg/modules/drivers/amdgpu_drv.so (_init+0x828b) [0x7f5cf5919d6b]
Mar 01 16:23:34 krejzi /usr/libexec/gdm-x-session[629]: (EE) 18:
/usr/libexec/Xorg (InitOutput+0xb52) [0x480732]
Mar 01 16:23:34 krejzi /usr/libexec/gdm-x-session[629]: (EE) 19:
/usr/libexec/Xorg (remove_fs_handlers+0x498) [0x4396d8]
Mar 01 16:23:34 krejzi /usr/libexec/gdm-x-session[629]: (EE) 20: /lib/libc.so.6
(__libc_start_main+0xf0) [0x7f5cfaf307a0]
Mar 01 16:23:34 krejzi /usr/libexec/gdm-x-session[629]: (EE) 21:
/usr/libexec/Xorg (_start+0x29) [0x421529]
Mar 01 16:23:34 krejzi /usr/libexec/gdm-x-session[629]: (EE) 22: ? (?+0x29)
[0x29]
Mar 01 16:23:34 krejzi /usr/libexec/gdm-x-session[629]: (EE)
Mar 01 16:23:34 krejzi /usr/libexec/gdm-x-session[629]: (EE) Segmentation fault
at address 0x10
Mar 01 16:23:34 krejzi /usr/libexec/gdm-x-session[629]: (EE)
Mar 01 16:23:34 krejzi /usr/libexec/gdm-x-session[629]: Fatal server error:
Mar 01 16:23:34 krejzi /usr/libexec/gdm-x-session[629]: (EE) Caught signal 11
(Segmentation fault). Server aborting

Ignore the /usr/libexec/gdm-x-session, as GNOME's gdm reditects Xorg.log to
systemd journal instead.

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[Bug 94249] Topaz GPU not working correctly

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https://bugs.freedesktop.org/show_bug.cgi?id=94249

--- Comment #3 from Armin K <krejzi@email.com> ---
Ping? This is still problematic with Linux 4.5.1, xf86-video-amdgpu-1.1.0,
xorg-server-1.18.3 and mesa-11.2.0.

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[Bug 94249] Topaz GPU not working correctly

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https://bugs.freedesktop.org/show_bug.cgi?id=94249

--- Comment #4 from Michel Dänzer <michel@daenzer.net> ---
First of all, for Topaz / Iceland I think it's best to use current Git
snapshots of Mesa and libdrm_amdgpu.

Please attach the full Xorg log corresponding to the failure.

A gdb backtrace would also be helpful, see
https://www.x.org/wiki/Development/Documentation/ServerDebugging/ .

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[Bug 94249] Topaz GPU not working correctly

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https://bugs.freedesktop.org/show_bug.cgi?id=94249

--- Comment #5 from Armin K <krejzi@email.com> ---
I'm using Mesa 12.1.0-devel (git-c98c732) and libdrm-2.4.70. I think that's
quite recent. I'm also using linux-4.7.0 atm.

You can find the requested information in the attached files.

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[Bug 94249] Topaz GPU not working correctly

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https://bugs.freedesktop.org/show_bug.cgi?id=94249

--- Comment #6 from Armin K <krejzi@email.com> ---
Created attachment 125417
  --> https://bugs.freedesktop.org/attachment.cgi?id=125417&action=edit
Xorg log

Here's the Xorg.log extracted from journal.

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[Bug 94249] Topaz GPU not working correctly

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https://bugs.freedesktop.org/show_bug.cgi?id=94249

--- Comment #7 from Armin K <krejzi@email.com> ---
Created attachment 125418
  --> https://bugs.freedesktop.org/attachment.cgi?id=125418&action=edit
gdb backtrace Xorg

Here's the best backtrace I could obtain from the Xorg server. I used a core
file stored in journal. I'm not sure where those missing symbols are from.

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[Bug 94249] Topaz GPU not working correctly

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https://bugs.freedesktop.org/show_bug.cgi?id=94249

--- Comment #8 from Armin K <krejzi@email.com> ---
Created attachment 125419
  --> https://bugs.freedesktop.org/attachment.cgi?id=125419&action=edit
gdb backtrace glxinfo

Here's the backtrace of glxinfo when trying to use DRI3 PRIME (not loading
amdgpu, but running DRI_PRIME=1 glxinfo with xf86-video-intel using DRI3).

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[Bug 94249] Topaz GPU not working correctly

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https://bugs.freedesktop.org/show_bug.cgi?id=94249

--- Comment #9 from Armin K <krejzi@email.com> ---
Created attachment 125420
  --> https://bugs.freedesktop.org/attachment.cgi?id=125420&action=edit
dmesg output from the current system

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[Bug 94249] Topaz GPU not working correctly

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https://bugs.freedesktop.org/show_bug.cgi?id=94249

--- Comment #10 from Armin K <krejzi@email.com> ---
Created attachment 125437
  --> https://bugs.freedesktop.org/attachment.cgi?id=125437&action=edit
dmesg output from the current system

Trying airied's drm-next tree from today. The dmesg output is a bit different
but the segfaults are still the same.

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[Bug 94249] Topaz GPU not working correctly

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https://bugs.freedesktop.org/show_bug.cgi?id=94249

--- Comment #11 from Michel Dänzer <michel@daenzer.net> ---
Weird, it seems to crash on this line of libdrm_amdgpu's amdgpu_vamgr_find_va:

        LIST_FOR_EACH_ENTRY_SAFE(hole, n, &mgr->va_holes, list) {

Are you using any unusual compiler (options)?

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[Bug 94249] Topaz GPU not working correctly

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https://bugs.freedesktop.org/show_bug.cgi?id=94249

--- Comment #12 from Armin K <krejzi@email.com> ---
I use clang 3.9 svn (same crash with clang 3.8 by the way) with -march=skylake
-g -O2 -pipe

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[Bug 94249] libdrm_amdgpu: Crash when built with clang

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https://bugs.freedesktop.org/show_bug.cgi?id=94249

Armin K <krejzi@email.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|DRM/AMDgpu                  |libdrm
            Summary|Topaz GPU not working       |libdrm_amdgpu: Crash when
                   |correctly                   |built with clang

--- Comment #13 from Armin K <krejzi@email.com> ---
Rebuilding libdrm with gcc instead of clang using the same flags fixes the
problem.

The issues is indeed in libdrm_amdgpu. Now I get this with glxinfo:

OpenGL renderer string: Gallium 0.4 on AMD ICELAND (DRM 3.2.0 / 4.7.0-krejzi,
LLVM 3.9.0)
OpenGL core profile version string: 4.3 (Core Profile) Mesa 12.1.0-devel
(git-c98c732)
OpenGL core profile shading language version string: 4.30

I'd be grateful if the issue was fixed, I'm trying to get rid of gcc.

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[Bug 94249] libdrm_amdgpu: Crash when built with clang

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[-- Attachment #1.1: Type: text/plain, Size: 406 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=94249

--- Comment #14 from Michel Dänzer <michel@daenzer.net> ---
Created attachment 125478
  --> https://bugs.freedesktop.org/attachment.cgi?id=125478&action=edit
Make sure the second argument to container_of() is  initialized

Does this patch fix the problem with clang?

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[Bug 94249] libdrm_amdgpu: Crash when built with clang

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https://bugs.freedesktop.org/show_bug.cgi?id=94249

--- Comment #15 from Armin K <krejzi@email.com> ---
(In reply to Michel Dänzer from comment #14)
> Created attachment 125478 [details] [review]
> Make sure the second argument to container_of() is  initialized
> 
> Does this patch fix the problem with clang?

It appears like its working! Thanks.

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[Bug 94249] libdrm_amdgpu: Crash when built with clang

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[-- Attachment #1.1: Type: text/plain, Size: 708 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=94249

Michel Dänzer <michel@daenzer.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|NEW                         |RESOLVED

--- Comment #16 from Michel Dänzer <michel@daenzer.net> ---
Should be fixed with

commit b214b05ccd433c484a6a65e491a1a51b19e4811d
Author: Rob Clark <robclark@freedesktop.org>
Date:   Tue Aug 2 16:16:02 2016 -0400

    list: fix an issue with android build using clang

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