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Re: [Xen-users] Help with VGA passthrough

On Wednesday 25 June 2014 02:48:49 Brian Menges wrote:
> When I assign it to a linux domU (yes, HVM):
> 00:05.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
> Caicos [Radeon HD 6450/7450/8450 / R5 230 OEM] 00:06.0 Audio device:
> Advanced Micro Devices, Inc. [AMD/ATI] Caicos HDMI Audio [Radeon HD 6400
> Series]
> [    5.246901] [drm] initializing kernel modesetting (CAICOS 0x1002:0x6779
> 0x1682:0x3207). [    5.246970] [drm] register mmio base: 0xF3000000
> [    5.246972] [drm] register mmio size: 131072
> [    5.246996] radeon 0000:00:05.0: Expecting atombios for evergreen GPU
> [    5.247053] radeon 0000:00:05.0: Fatal error during GPU init
> [    5.247100] [drm] radeon: finishing device.
> [    5.247102] [TTM] Memory type 2 has not been initialized
> [    5.256465] radeon: probe of 0000:00:05.0 failed with error -22
> [    5.386743] xen: --> pirq=17 -> irq=41 (gsi=41)

This looks almost identical to the error I get with my HD 5450 on Xen 4.4.0 
with the open source drivers. I reported it here: 

I have no problems if I use the catalyst proprietary drivers on the DomU. What 
drivers are you using in the DomU?
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