Man, these freezes really bug me off … After setting up my laptop i realized that everytime i turn compiz on, the system would hang for 1-2 second then continue working as normal. The time interval between two freezes is random. This problem persisted with both closed and open source drivers (for an ATI Mobility x2300 ).
It’s hard to google about a general problem like this, so i posted question on various forums. Luckily, i am not the only one is affected. This post explains the reason:
It seems that PAT support that is included in linux kernel 2.6.26 has some problems. If you are using a recent ATI Catalst (fglrx) driver (at the time of this writting, the lattest was 8.8) with 2.6.26 kernel with PAT support you may have problems.
Problems may include freezes every couple of seconds when playing videos or full-screen 3D apps/games.
To solve this problem you will have to disable PAT support in kernel. Fortunately there is a kernel boot parameter that does with without requiring recompilation. Just add “nopat” to kernel boot parameters and you should be OK. Debian users should not worry since PAT is disabled in the default kernel.
My /boot/grub/menu.lst:
title Arch Linux
root (hd0,0)
kernel /boot/vmlinuz26 root=/dev/sda1 ro nopat
initrd /boot/kernel26.img
Comments 1
Thank you VERY much
Posted 07 Dec 2008 at 9:31 pm ¶Post a Comment