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Re: PR/52438 CVS commit: src/sys/external/bsd/drm2/dist/drm/ttm

The following reply was made to PR kern/52438; it has been noted by GNATS.

From: Hauke Fath <>
To: Taylor R Campbell <>
Subject: Re: PR/52438 CVS commit: src/sys/external/bsd/drm2/dist/drm/ttm
Date: Mon, 7 Aug 2017 13:03:20 +0200

 On 08/03/17 17:10, Taylor R Campbell wrote:
 > Interesting.  Not clear to me why bus_dmamap_create(BUS_DMA_WAITOK)
 > could fail like this.  Will need to dive into x86/bus_dma.c to make
 > some hypotheses.
 After fancy screen artifacts, the screen went black, and I had to kill 
 the session.
 Looking into Xorg.0.log, I see lots of
 [412018.872] (WW) RADEON(0): Page flip failed: Invalid argument
 [412018.921] (WW) RADEON(0): flip queue failed: Invalid argument
 and xdm.log talked of failed memory allocations (there is no backup 
 file, so I don't have the exact wording).

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