[PATCH xserver 4/4] xfree86: promote one GPU screen if (NumScreens == 0 && NumGPUScreens > 0)

[Marcin Juszkiewicz]

W dniu 05.09.2016 o 14:39, Laszlo Ersek pisze:

> I didn't want to mess with the definition of "primary graphics card",
> because that seems to have ties to platforms and graphics cards that I
> have no clue about. Instead, picking an unspecified secondary graphics
> card automatically, when there is no primary graphics card and the user
> also doesn't select a secondary with Device.BusID, seems quite robust
> for physical platforms too.
> 
> In fact Marcin just informed me about the same problem for physical
> (aarch64) hosts, with Radeon (?) cards; that is, with cards that Xserver
> currently considers "secondary / GPU":
> 
> https://bugzilla.redhat.com/show_bug.cgi?id=1256933
> 
> https://marcin.juszkiewicz.com.pl/2015/09/11/how-to-get-xserver-running-out-of-box-on-aarch64/
> 
> I think this series could solve that problem as well, without
> customizing on what architecture what kind of card should be considered
> primary / secondary.

I fetched Laszlo's patches and rebuilt xorg-xserver with them for rawhide.

My setup is APM Mustang with Radeon HP5450 inserted (via riser) into
PCIe x8 slot.

F26 xserver-xorg installed:

 (EE) No devices detected.
 (EE)
Fatal server error:
 (EE) no screens found(EE)

Full log: https://paste.fedoraproject.org/422275/47307919

Xserver-xorg with Laszlo's patches:

 (WW) RADEON(G0): promoting secondary graphics card...
 (WW) RADEON(0): ... to primary.
 (WW) Use Device.BusID to select a specific secondary graphics card.
 (II) RADEON(0): Creating default Display subsection in Screen section
	"Default Screen Section" for depth/fbbpp 24/32
 (==) RADEON(0): Depth 24, (--) framebuffer bpp 32
 (II) RADEON(0): Pixel depth = 24 bits stored in 4 bytes (32 bpp pixmaps)
 (==) RADEON(0): Default visual is TrueColor
 (==) RADEON(0): RGB weight 888
 (II) RADEON(0): Using 8 bits per RGB (8 bit DAC)
 (--) RADEON(0): Chipset: "ATI Radeon HD 5450" (ChipID = 0x68f9)

I do not have outputs connected at this moment but X11 just went up.

Full log: https://paste.fedoraproject.org/422273/07913514

Tested-By: Marcin Juszkiewicz <mjuszkiewicz at redhat.com>