2009-03-24, 23:28
Hi!
I've successfully installed XBMC on my box (E8400, 2gig ram, ati radeon 4850) on both ubuntu 8.10 and gentoo.
For the ubuntu installation I've used this page http://forum.xbmc.org/showthread.php?p=185738 (intrepid ppa), under gentoo I just did "emerge xbmc".
The problem is, that I can watch every video on ubuntu installation and it plays fluently, even the craziest 1080p clips. On the gentoo on the other hand it plays a bit choppy. Playing the same with mplayer on gentoo is not choppy at all (both -vo xv and -vo gl).
Both systems use fglrx and have the same xorg.conf. Ubuntu uses 8.543 ati drivers and 2.6.27-7 kernel, Gentoo uses 8.582 ati drivers and 2.6.26-gentoo-r1 kernel. Both have gnome installed, both play all content with mplayer/vlc/ffmplay fluently.
The emerge xbmc just checks out the latest code from the SVN and compiles that. I have tested this on two revisions, now 18868 i guess.
The difference that I have noticed about the two installations is that under ubuntu, when I go to "system info" screen in XBMC I see 100Hz refresh rate. When I go there on gentoo, I see 30Hz refresh rate.
I've already seen some posts on this forum about tearing the video due to refresh rate being to low. The question is how can I influence the refresh rate that is set by the xbmc?
I've already tried cleaning the xorg.conf, all gnome user settings and so on. I have also trying running the gentoo installation with -fs parameter and setting different resolutions with no luck - always the refresh rate is reported as 30Hz.
I would be grateful if anyone would read that and could point me somewhere.
regs!
I've successfully installed XBMC on my box (E8400, 2gig ram, ati radeon 4850) on both ubuntu 8.10 and gentoo.
For the ubuntu installation I've used this page http://forum.xbmc.org/showthread.php?p=185738 (intrepid ppa), under gentoo I just did "emerge xbmc".
The problem is, that I can watch every video on ubuntu installation and it plays fluently, even the craziest 1080p clips. On the gentoo on the other hand it plays a bit choppy. Playing the same with mplayer on gentoo is not choppy at all (both -vo xv and -vo gl).
Both systems use fglrx and have the same xorg.conf. Ubuntu uses 8.543 ati drivers and 2.6.27-7 kernel, Gentoo uses 8.582 ati drivers and 2.6.26-gentoo-r1 kernel. Both have gnome installed, both play all content with mplayer/vlc/ffmplay fluently.
The emerge xbmc just checks out the latest code from the SVN and compiles that. I have tested this on two revisions, now 18868 i guess.
The difference that I have noticed about the two installations is that under ubuntu, when I go to "system info" screen in XBMC I see 100Hz refresh rate. When I go there on gentoo, I see 30Hz refresh rate.
I've already seen some posts on this forum about tearing the video due to refresh rate being to low. The question is how can I influence the refresh rate that is set by the xbmc?
I've already tried cleaning the xorg.conf, all gnome user settings and so on. I have also trying running the gentoo installation with -fs parameter and setting different resolutions with no luck - always the refresh rate is reported as 30Hz.
I would be grateful if anyone would read that and could point me somewhere.
regs!