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Old 02-12-03, 06:48 PM   #1
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Join Date: Feb 2003
Posts: 4
Default slow 2D refresh with nvidia driver


I'm having a nvidia driver related problem on my Debian woody installation. The driver is - as far as I know - working properly (glx is fine). I had no problem with the installation although my hardware - M1541 and TNT - is sad not to work well with the driver.

My problem is that all my applications have problems in displaying text with the speed I am used to. Scrolling through large documents (text, pdf, thatever) is slow and in some apps I can write faster than the display draws the characters (and I am not a very fast writer
Moving Windows on the screen has the same effect. Both things - scrolling and moving - need much CPU also.

Switching to the nv driver everything is normal (fast).

The card is detected correctly, no os-registry.c tweaking necessary. I tested 2880 and 3123 both with the same effect.

I tried to
- disable AGP (mode 2x is default, 1x is not working)
- using the kernel APG module

- (BIOS) disable the APG Turbo Mode
- (BIOS) disable Frame Buffer Post Write
- (BIOS) set I/O Recovery to 4 BUSCYL instead of 2

Could need some help here. Any ideas would be appreciated.



-- now some infos that might be useful

ASUS P5A BIOS 1011 Beta 05
XFree86 4.1.0

- [ /proc/mtrr
reg00: base=0xe7000000 (3696MB), size= 16MB: write-combining, count=1
reg01: base=0xe0000000 (3584MB), size= 64MB: write-combining, count=1

- [ /proc/driver/nvidia/version
NVRM version: NVIDIA NVdriver Kernel Module 1.0-2880 Tue Mar 26 08:12:38 PST 2002
GCC version: gcc version 2.95.4 20011002 (Debian prerelease)

- [ /proc/driver/nvidia/agp/card
Fast Writes: Not Supported
SBA: Not Supported
AGP Rates: 2x 1x
Registers: 0x0f000003:0x0f000102

- [ /proc/driver/nvidia/agp/host-bridge
Host Bridge: ALi M1541
Fast Writes: Not Supported
SBA: Supported
AGP Rates: 2x 1x
Registers: 0x1c000203:0x0f000102

- [ /proc/driver/nvidia/agp/status
Status: Enabled
AGP Rate: 2x
Fast Writes: Disabled
SBA: Disabled

- [ /proc/driver/nvidia/cards/0
IRQ: 11
Video BIOS:
Card Type: AGP
Attached Files
File Type: txt xfree86.0.log.txt (18.4 KB, 148 views)
KarlArschus is offline   Reply With Quote