FS#8777 - Rage Mobility (mach64) slow/glitchy with 16 bit color depth (xorg-server 1.4-5)
Attached to Project:
Arch Linux
Opened by Gary D. Huffman, II (Arch4Ever) - Wednesday, 28 November 2007, 03:12 GMT
Last edited by Aaron Griffin (phrakture) - Thursday, 19 June 2008, 18:34 GMT
Opened by Gary D. Huffman, II (Arch4Ever) - Wednesday, 28 November 2007, 03:12 GMT
Last edited by Aaron Griffin (phrakture) - Thursday, 19 June 2008, 18:34 GMT
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Details
Description:
Performance is a bit slow at 24 bit color, playing full screen high resolution video + audio (pretty much expected given 8 megs of VRAM @ 1024x768). However, performance at 16 bit color is strange at best. For example window resize operations cause minor freezes/glitches, but full screen high resolution video + audio is fast as expected. Most (all?) other distributions performed much better in every area at 16 bit color with this video chipset. Any thoughts anyone? |
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I decided to give hardware acceleration a shot to see if that would change anything. I recompiled my xf86-video-ati with a modified PKGBUILD, and compiled the latest drm.ko/mach64.ko from freedesktop.org git. Everything seems to be working fine, except maximizing a window is still extremely slow at 16 bit color (it's fine at 24 bit). I decided to check the MTRR setup, in case that was being setup incorrectly by the kernel modules, and indeed it was. However, I made a script to fix that, and the weird slowness at certain operations (in 16 bit color) still persists. :(
Just to be sure it's a bug, can you post your xorg.conf here?