| Bug ID | 101988 |
|---|---|
| Summary | blackscreen after modprobe amdgpu on R9M370X mac edition |
| Product | DRI |
| Version | unspecified |
| Hardware | x86-64 (AMD64) |
| OS | Linux (All) |
| Status | NEW |
| Severity | blocker |
| Priority | medium |
| Component | DRM/AMDgpu |
| Assignee | dri-devel@lists.freedesktop.org |
| Reporter | newincpp@gmail.com |
Created attachment 133154 [details]
dmesg after `modprobe amdgpu` and getting blackscreen
I don't know if this is specific to R9M370X - mac edition but I couldn't
reproduce it on other AMD PC I have.
This is fairly simple to reproduce, I just have to mount the amdgpu and I g=
et a
black screen on my main screen and my main screen only (my second screen is
fine)
I don't have this problem using radeon with the exact same kernel config.
dmesg is saying everything is fine and X11 log is irrelevant because it hap=
pen
_before_ startx.
I am using Linux 4.12.4-gentoo.
Created attachment 133155 =
[details]
My kernel .config
note that I disabled the intel driver and the runtime gpu switch despite the
fact that 2015 MBP have an internal intel GPU but this bug is also reproduc=
ible
with it.
| What | Removed | Added |
|---|---|---|
| Status | NEW | RESOLVED |
| Resolution | --- | NOTOURBUG |
I don't see any problems with the driver load. The display sw= itching is handled by a proprietary mechanism independent of the GPU driver on macs. = I'm not sure what the status of that support is. I think your problem is likely related to that.
Does using this branch help? https://cgit.freedesktop.org/~agd5f/linux/log/?h=3Ddrm-next-4.14-wip<= /a>
| What | Removed | Added |
|---|---|---|
| Resolution | NOTOURBUG | --- |
| Status | RESOLVED | REOPENED |
I cloned "~agd5f/linux" on the branch "drm-next= -4.14-wip" and copied my .config from the 4.12.4 I was using. `uname -r` give me "4.12.0-rc7+" Now `modprobe amdgpu` is freezing my screen instead of blackscreen. `dmesg | grep amdgpu -i` give this : [ 107.804074] [drm] amdgpu kernel modesetting enabled. [ 107.804109] fb: switching to amdgpudrmfb from EFI VGA [ 107.804672] amdgpu 0000:01:00.0: SI support provided by radeon. [ 107.804674] amdgpu 0000:01:00.0: Use radeon.si_support=3D0 amdgpu.si_sup= port=3D1 to override. Using 4.12.4 my second screen was fine, that isn't the case anymore with drm-next-4.14-wip. Using 4.12.4 I could startx (with a second screen obviously, my main screen= was remaining black) now startx seems to return "no screen found". Note that radeon is still working perfectly.
Can you try this patch: https://cgit.fre= edesktop.org/~agd5f/linux/commit/?h=3Ddrm-next-4.14-wip&id=3De5c8d400da= 67abc1c033b9a4af1806926b55e5f6
git apply returned me: "error: patch failed: drivers/gpu/drm/amd/amdgpu/si.c:1413 error: drivers/gpu/drm/amd/amdgpu/si.c: patch does not apply" So I checked manually: 1413 amdgpu_program_register_sequence(adev, 1414 pitcairn_mgcg_cgcg_in= it, 1415 (const u32)ARRAY_SIZE(pitcairn_mgcg_cgcg_init)); 1416 break; 1417 1438 amdgpu_program_register_sequence(adev, 1439 oland_mgcg_cgcg_init, 1440 (const u32)ARRAY_SIZE(oland_mgcg_cgcg_init)); 1441 break; 1442 case CHIP_HAINAN: 1443 The two break are already there. I checked if I cloned what you said: `git branch` return "* drm-next-4.14-wip" I also checked using git log and the patch e5c8d400da67abc1c033b9a4af1806926b55e5f6 is already in the list PS: I'm very far from being a git expert so maybe I got something wrong and= not cloned the good one ?
(In reply to newincpp from comment #7) > The two break are already there. I checked if I = cloned what you said: > `git branch` return > "* drm-next-4.14-wip" > I also checked using git log and the patch > e5c8d400da67abc1c033b9a4af1806926b55e5f6 is already in the list The patch is already there in my 4.14-wip branch, but you seem to be having other problems with that kernel, so I suggested that patch if you want to t= ry the patch on an older kernel that works better.
Having this patch or not on 4.12.4 does not change anything (a= t least on this bug)
(In reply to newincpp from comment #5) > [ 107.804672] amdgpu 0000:01:00.0: SI support p= rovided by radeon. > [ 107.804674] amdgpu 0000:01:00.0: Use radeon.si_support=3D0 > amdgpu.si_support=3D1 to override. Follow this advice and set radeon.si_support=3D0 amdgpu.si_support=3D1 to u= se the amdgpu driver. (In exchange, you no longer need to blacklist the radeon dri= ver)
| What | Removed | Added |
|---|---|---|
| Resolution | --- | MOVED |
| Status | REOPENED | RESOLVED |
-- GitLab Migration Automatic Message -- This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity. You can subscribe and participate further through the new bug through this = link to our GitLab instance: https://gitlab.freedesktop.org/drm/amd/issues/216.