On Fri, 2009-04-10 at 13:32 +0200, Yannick Roehlly wrote: > Hi Julien, > > Le Friday 10 April 2009 12:33:54 Julien Cristau, vous avez écrit : > > What's in /proc/mtrr? > > reg00: base=0x000000000 ( 0MB), size= 2048MB, count=1: write-back > no uncached or write-combining entries?
> > Also 'dmesg|grep mtrr'. > > [ 1010.396231] mtrr: no MTRR for c0000000,10000000 found > [ 1050.243537] mtrr: no MTRR for c0000000,10000000 found > [11631.534653] mtrr: no MTRR for c0000000,10000000 found > [11763.005918] mtrr: no MTRR for c0000000,1000000 found > [12923.091164] mtrr: no MTRR for c0000000,10000000 found > > Note that this machine has problems for running Xorg with two memory modules, > as described in this kernel bug report: > > http://bugzilla.kernel.org/show_bug.cgi?id=11103 > > (I've not yet done the test asked by Yinghai Lu) > > But it has always worked fine with one memory module. > > Do you think it may be related? Yes. Not having a write-combining mapping for the framebuffer is a big fat fail. Cheers, Julien -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org