Re: AMDGPU in current issue

Been using since yesterday a custom kernel with amdgpu, on a Ryzen 5 PRO
2500U, as I saw many commits. For me now the display is now usable and
stable, still minor issues, so I can use the laptop with external
monitor.

In exchange I tried to hibernate, which was working with the UEFI vesa
driver, and seems that doesn't work (tried only once) and suspend still
not working.

I will keep using the amdgpu driver from now unless I see major issues,
because being able to use two screens is important.

Regards.

Jonathan Gray <jsg@jsg.id.au> writes:

> On Fri, Aug 02, 2019 at 03:11:54AM -0500, Charlie Burnett wrote:
>> Hey-
>> I'd been messing around with the AMDGPU on current (which I'm aware is very
>> experimental) and had very few issues with it using a Vega 56 GPU. I
>> recently swapped to another Vega GPU (Radeon VII) and have issues with the
>> display not showing anything. Still boots fine, in that I can still enter
>> commands (i.e. reboot) so it has to be a display issue. I tried searching
>> for the diff where the firmware was added which I'm certain I saw (for Vega
>> 20) but can't seem to find it in the commit history. Anyone have a fix for
>> it, and if not, who should I talk to if I wanted to help get it working? I
>> saw most of the AMDGPU commits have been by @jonathangray if he would be
>> the best option.
>> Thanks!
>
> vega20 firmware was added when ports/sysutils/firmware/amdgpu was
> updated to 20190312.
>
> vega20 is marked as experimental in the version of drm we have, but we
> don't currently check the flag on probe like linux does.
>
> The following diff will prevent amdgpu from matching on devices
> in the amdgpu_pciidlist table with the AMD_EXP_HW_SUPPORT flag
> (currently these are all vega20 ids).
>
> Index: sys/dev/pci/drm/include/drm/drm_drv.h
> ===================================================================
> RCS file: /cvs/src/sys/dev/pci/drm/include/drm/drm_drv.h,v
> retrieving revision 1.2
> diff -u -p -r1.2 drm_drv.h
> --- sys/dev/pci/drm/include/drm/drm_drv.h 25 Jul 2019 05:48:16 -0000 1.2
> +++ sys/dev/pci/drm/include/drm/drm_drv.h 2 Aug 2019 03:29:58 -0000
> @@ -291,5 +291,7 @@ static inline bool drm_drv_uses_atomic_m
> int drm_dev_register(struct drm_device *, unsigned long);
> void drm_dev_unregister(struct drm_device *);
> int drm_getpciinfo(struct drm_device *, void *, struct drm_file *);
> +const struct drm_pcidev *drm_find_description(int, int,
> + const struct drm_pcidev *);
>
>