From mboxrd@z Thu Jan 1 00:00:00 1970 From: Konrad Rzeszutek Wilk Subject: Re: Problem: Pattern with vertical colored lines on the dom0 screen Date: Tue, 21 Sep 2010 10:42:50 -0400 Message-ID: <20100921144250.GC2926@dumpdata.com> References: <201009171520.11903.dietmar.hahn@ts.fujitsu.com> <20100920205926.GC26201@dumpdata.com> <201009210919.51666.dietmar.hahn@ts.fujitsu.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <201009210919.51666.dietmar.hahn@ts.fujitsu.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Dietmar Hahn Cc: xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org On Tue, Sep 21, 2010 at 09:19:51AM +0200, Dietmar Hahn wrote: > Am 20.09.2010 schrieb Konrad Rzeszutek Wilk: > > On Fri, Sep 17, 2010 at 03:20:11PM +0200, Dietmar Hahn wrote: > > > Hi list, > > > > > > I have a problem with a new laptop (reproducable on other machines too) and the > > > xen hypervisor. > > > When the hypervisor gets booted with VESA mode 800x600 I see some messages and > > > then the screen contents is switched into a pattern of vertical colored lines > > > and never comes back. > > > > > In text mode all works well, but later the pattern appears when the X servers > > > starts. > > > I disabled VTd in the bios and now all went fine. > > > > So no VT-d and the you have no trouble even with VESA 800x600? > Yes! And if you have VT-d enabled and you don't include the "vga=mode-0x314" then it works fine too? Just curious, but why did you try the 'vga=mode' option? > > > Are there any > > errors reported by Xen when you use VT-d? > In the original mail I sent the full hypervisor log from the error case (VT-d > switched on). I couldn't spot an error message. > > > Can you ping the machine even > > if the screen is showing vertical lines? > Yes the machine runs well. I can work remotely. Only the console is affected. > > > > I saw this first with SLES11 SP1 but could reproduce it with the xen-unstable > > > hypervisor. > > > > What about the Linux kernel? Is this happening when you use the PVOPS kernel? > > > I didn't try this out because at the end I could reproduce this behaviour while > booting the hypervisor and before dom0 starts. > Another thing is when starting the X server I see kernel messages in a loop: > [ 1193.549808] [drm:i915_hangcheck_elapsed] ERROR Hangcheck timer elapsed... GPU hung > [ 1193.572464] render error detected, EIR: 0x00000000 > [ 1193.586720] i915: Waking up sleeping processes > [ 1193.600679] [drm:i915_do_wait_request] ERROR i915_do_wait_request returns -5 (awaiting 1 at 0) Ugh, that looks nasty. > dom0 kernel is from SLES11 SP1 2.6.32.12-0.7-xen. > As in the orignal mail mentioned I would assume it's a problem with the bios > and maybe some access stuff due to the iommu. But I'am not familiar enough with > this. > So I hoped anybody on the list could give me a hint while reading the logs in > my original mail ;-) > Thanks. > > Dietmar. > > -- > Company details: http://ts.fujitsu.com/imprint.html > > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xensource.com > http://lists.xensource.com/xen-devel