Bug 110637

And the same thing with 4.19.40. And with manually built drm-next.

Also, not only libreoffice, but literally any application that uses OpenCL triggers the same problem. It seems that I just can't use OpenCL at all.

Other examples: Luxmark, Geekbench (`./geekbench4 --compute`)

More likely a bug in the mesa OpenCL code.  If you want functional OpenCL, you should use the ROCm OpenCL packages.

(In reply to Alex Deucher from comment #3)
> More likely a bug in the mesa OpenCL code.  If you want functional OpenCL,
> you should use the ROCm OpenCL packages.

I thought that buggy userspace shouldn't cause a complete GPU lockup like this...
The kernel log says "GPU reset succeeded", but it leaves GNOME session completely unusable (hung, artifacts on screen), restarting GDM also fails, the only way to recover is rebooting (sometimes only through Sysrq)

And also I get a very similar lockup (the same messages in kernel log, again with all kernel/firmware versions I tried) in a few Steam games running on Proton/DXVK.

Will try different mesa versions

And BTW with kernel 4.19.40 and latest git firmware (https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/commit/?id=2579167548be33afb1fe2a9a5c141561ee5a8bbe) monitors switch off on boot as soon as amdgpu driver loads and never turn on again

Can you post the output of 'clinfo'?
GPU hangs in clover are usually signs of old LLVM, or old mesa (that does not catch function calls).

Do you use ocl-icd?
if yes can you confirm if the games hang when running with OCL_ICD_VENDORS=/var/empty/ ?
(alternatively, you can just move libMesaOpenCL.* out of library path)



(In reply to Alex Deucher from comment #3)
> More likely a bug in the mesa OpenCL code.  If you want functional OpenCL,
> you should use the ROCm OpenCL packages.

I doubt that. clover uses the same LLVM code generation paths.
also note: "the same problem with multiple games", I doubt those use OpenCL. the above steps should confirm that.
My guess is that compute shaders are busted (irrespective of the API).
GPU reset has never worked correctly on any AMD GPU that I've ever used.

(In reply to Jan Vesely from comment #6)
> Can you post the output of 'clinfo'?

Sure

Number of platforms                               1
  Platform Name                                   Clover
  Platform Vendor                                 Mesa
  Platform Version                                OpenCL 1.1 Mesa 19.0.4
  Platform Profile                                FULL_PROFILE
  Platform Extensions                             cl_khr_icd
  Platform Extensions function suffix             MESA

  Platform Name                                   Clover
Number of devices                                 1
  Device Name                                     Radeon RX Vega (VEGA10, DRM 3.30.0, 5.1.0-arch1-1-ARCH, LLVM 8.0.0)
  Device Vendor                                   AMD
  Device Vendor ID                                0x1002
  Device Version                                  OpenCL 1.1 Mesa 19.0.4
  Driver Version                                  19.0.4
  Device OpenCL C Version                         OpenCL C 1.1 
  Device Type                                     GPU
  Device Profile                                  FULL_PROFILE
  Device Available                                Yes
  Compiler Available                              Yes
  Max compute units                               64
  Max clock frequency                             1630MHz
  Max work item dimensions                        3
  Max work item sizes                             256x256x256
  Max work group size                             256
  Preferred work group size multiple              64
  Preferred / native vector sizes                 
    char                                                16 / 16      
    short                                                8 / 8       
    int                                                  4 / 4       
    long                                                 2 / 2       
    half                                                 8 / 8        (cl_khr_fp16)
    float                                                4 / 4       
    double                                               2 / 2        (cl_khr_fp64)
  Half-precision Floating-point support           (cl_khr_fp16)
    Denormals                                     No
    Infinity and NANs                             Yes
    Round to nearest                              Yes
    Round to zero                                 No
    Round to infinity                             No
    IEEE754-2008 fused multiply-add               No
    Support is emulated in software               No
  Single-precision Floating-point support         (core)
    Denormals                                     No
    Infinity and NANs                             Yes
    Round to nearest                              Yes
    Round to zero                                 No
    Round to infinity                             No
    IEEE754-2008 fused multiply-add               No
    Support is emulated in software               No
    Correctly-rounded divide and sqrt operations  No
  Double-precision Floating-point support         (cl_khr_fp64)
    Denormals                                     Yes
    Infinity and NANs                             Yes
    Round to nearest                              Yes
    Round to zero                                 Yes
    Round to infinity                             Yes
    IEEE754-2008 fused multiply-add               Yes
    Support is emulated in software               No
  Address bits                                    64, Little-Endian
  Global memory size                              8573157376 (7.984GiB)
  Error Correction support                        No
  Max memory allocation                           6858525900 (6.387GiB)
  Unified memory for Host and Device              No
  Minimum alignment for any data type             128 bytes
  Alignment of base address                       32768 bits (4096 bytes)
  Global Memory cache type                        None
  Image support                                   No
  Local memory type                               Local
  Local memory size                               32768 (32KiB)
  Max number of constant args                     16
  Max constant buffer size                        2147483647 (2GiB)
  Max size of kernel argument                     1024
  Queue properties                                
    Out-of-order execution                        No
    Profiling                                     Yes
  Profiling timer resolution                      0ns
  Execution capabilities                          
    Run OpenCL kernels                            Yes
    Run native kernels                            No
  Device Extensions                               cl_khr_byte_addressable_store cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_khr_int64_base_atomics cl_khr_int64_extended_atomics cl_khr_fp64 cl_khr_fp16

NULL platform behavior
  clGetPlatformInfo(NULL, CL_PLATFORM_NAME, ...)  Clover
  clGetDeviceIDs(NULL, CL_DEVICE_TYPE_ALL, ...)   Success [MESA]
  clCreateContext(NULL, ...) [default]            Success [MESA]
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_DEFAULT)  Success (1)
    Platform Name                                 Clover
    Device Name                                   Radeon RX Vega (VEGA10, DRM 3.30.0, 5.1.0-arch1-1-ARCH, LLVM 8.0.0)
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_CPU)  No devices found in platform
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_GPU)  Success (1)
    Platform Name                                 Clover
    Device Name                                   Radeon RX Vega (VEGA10, DRM 3.30.0, 5.1.0-arch1-1-ARCH, LLVM 8.0.0)
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_ACCELERATOR)  No devices found in platform
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_CUSTOM)  No devices found in platform
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_ALL)  Success (1)
    Platform Name                                 Clover
    Device Name                                   Radeon RX Vega (VEGA10, DRM 3.30.0, 5.1.0-arch1-1-ARCH, LLVM 8.0.0)

ICD loader properties
  ICD loader Name                                 OpenCL ICD Loader
  ICD loader Vendor                               OCL Icd free software
  ICD loader Version                              2.2.12
  ICD loader Profile                              OpenCL 2.2

(In reply to Jan Vesely from comment #6)
> if yes can you confirm if the games hang when running with
> OCL_ICD_VENDORS=/var/empty/ ?
> (alternatively, you can just move libMesaOpenCL.* out of library path)

No, setting OCL_ICD_VENDORS didn't change anything (though I'm not completely sure that Steam and then Proton don't discard environment variables somewhere).

However, upgrading Mesa to 19.0.4 fixed game hangs. OpenCL issues are still here.

Tried Mesa 19.1.0-rc3
Geekbench hangs, but there are no immediate errors in dmesg. It looks like gpu is doing something based on 'sensors' output (~130 W power consumption, at idle it is <20W). And power consumption doesn't go down even when I kill geekbench. When I try to reboot, the system hangs.

(In reply to Alex Deucher from comment #3)
> More likely a bug in the mesa OpenCL code.  If you want functional OpenCL,
> you should use the ROCm OpenCL packages.

Do you mean "Mesa OpenCL is not supported/unmaintained"?

I still can't get any OpenCL application to work (even "Hello World" examples).

Mesa 18.3.4, 19.0.x - GPU hangs then resets. But judging by power consumption (hwmon, 70W - higher than usual idle power consumption) GPU continues to do something even after reset

Mesa 19.1.x, git master - GPU doesn't hang but applications themselves hang on the first clFinish. Power consumption stays higher than typical idle power again.

Building ROCm from source is a huge pain.

(In reply to Alexander Mezin from comment #10)
> (In reply to Alex Deucher from comment #3)
> > More likely a bug in the mesa OpenCL code.  If you want functional OpenCL,
> > you should use the ROCm OpenCL packages.
> 
> Do you mean "Mesa OpenCL is not supported/unmaintained"?

Correct.

-- 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/mesa/mesa/issues/1402.