Re: poor scrolling in qemu-kvm

2014-12-13 Thread Ludovic Courtès
l...@gnu.org (Ludovic Courtès) skribis: > The right thing is to use ‘-vga std’, which uses a “standard VGA” > emulator, which doesn’t have this problem. > > However, X will fail to start currently when using this. Somehow this problem disappeared recently, and running X in -vga std works fine as

Re: poor scrolling in qemu-kvm

2014-12-05 Thread Andreas Enge
On Mon, Dec 01, 2014 at 09:20:49AM +0100, Federico Beffa wrote: > It sounds like you did quite some work on it already. Please go on if > you like. I'm not trying to step on anyone's feet :-) Difficult to step on anyone's feet by doing work ;-) I am definitely not going to work on "guix refresh"

Re: poor scrolling in qemu-kvm

2014-12-01 Thread Federico Beffa
On Sun, Nov 30, 2014 at 6:47 PM, Andreas Enge wrote: > On Sun, Nov 30, 2014 at 05:05:30PM +0100, Federico Beffa wrote: >> Right now there are newer versions than the ones mentioned in the >> comment of the mesa package. If things require substantial upgrades I >> will get back to the list. > > I

Re: poor scrolling in qemu-kvm

2014-11-30 Thread Andreas Enge
On Sun, Nov 30, 2014 at 05:05:30PM +0100, Federico Beffa wrote: > Right now there are newer versions than the ones mentioned in the > comment of the mesa package. If things require substantial upgrades I > will get back to the list. I know, but I tried to package mesa 10 until I realised it would

Re: poor scrolling in qemu-kvm

2014-11-30 Thread Federico Beffa
On Sat, Nov 29, 2014 at 10:20 PM, Andreas Enge wrote: > On Sat, Nov 29, 2014 at 09:53:54PM +0100, Ludovic Courtès wrote: >> Long story short: we just need to update MESA to use the newer libdrm, >> and we should be able to fix that. >> Would you like to try? :-) I will first finish the work on n

Re: poor scrolling in qemu-kvm

2014-11-29 Thread Ludovic Courtès
Andreas Enge skribis: > On Sat, Nov 29, 2014 at 09:53:54PM +0100, Ludovic Courtès wrote: >> Long story short: we just need to update MESA to use the newer libdrm, >> and we should be able to fix that. >> Would you like to try? :-) > > I did try to update mesa, which was the source of some new pa

Re: poor scrolling in qemu-kvm

2014-11-29 Thread Andreas Enge
On Sat, Nov 29, 2014 at 09:53:54PM +0100, Ludovic Courtès wrote: > Long story short: we just need to update MESA to use the newer libdrm, > and we should be able to fix that. > Would you like to try? :-) I did try to update mesa, which was the source of some new packages in the xorg module. Howev

Re: poor scrolling in qemu-kvm

2014-11-29 Thread Ludovic Courtès
Federico Beffa skribis: > Have someone found out the reason for this poor performance in > qemu-kvm and how to fix it? Yes, I eventually found out: by default, QEMU uses a Cirrus VGA graphics adapter emulator, which is damn slow for this kind of framebuffer thing. The right thing is to use ‘-vg

Re: poor scrolling in qemu-kvm

2014-11-29 Thread Federico Beffa
On Sat, Nov 29, 2014 at 5:23 PM, Federico Beffa wrote: > Hi, > > I'm experimenting with the system in a qemu-kvm virtual machine. I > created an image and successfully booted. However, scrolling of the > display is unusably slow (e.g. displaying dmesg). The same problem is > also visible in Ludovi

poor scrolling in qemu-kvm

2014-11-29 Thread Federico Beffa
Hi, I'm experimenting with the system in a qemu-kvm virtual machine. I created an image and successfully booted. However, scrolling of the display is unusably slow (e.g. displaying dmesg). The same problem is also visible in Ludovic's presentation http://audio-video.gnu.org/video/ghm2014/2014-08-