[ubuntu] Get fglrx working in Hardy 64 with 4GB of ram or more - update

[sonni_kuba]

I was wondering if there has been any development on running the proprietary ATI drivers without disabling PCI remap memory. I have been trying to rewrite my /proc/mtrr tables, but without much success, and I actually need to use all of my 8GB of RAM.

Thanks in advance,
S

[kingtaurus]

Can you post your system specs (memory on graphics card, memory in system) and current mtrr tables?

[sonni_kuba]

Can you post your system specs (memory on graphics card, memory in system) and current mtrr tables?

Sure here are the specs,

system memory is 8 GB
graphics card is HD 2600 w/ 256 MB
current mtrr tables

reg00: base=0xd0000000 (3328MB), size= 256MB: uncachable, count=1
reg01: base=0xe0000000 (3584MB), size= 512MB: uncachable, count=1
reg02: base=0x00000000 ( 0MB), size=8192MB: write-back, count=1
reg03: base=0x200000000 (8192MB), size= 512MB: write-back, count=1
reg04: base=0x220000000 (8704MB), size= 128MB: write-back, count=1
reg05: base=0x228000000 (8832MB), size= 64MB: write-back, count=1

[kingtaurus]

I think the issue is with the base=0xd0000000 being declared uncachable. I think I'll also output from lspci -v (attach the output to your next post).

[sonni_kuba]

Thank you kingtaurus for your interest in helping me sort this case out; I actually wrote a script to rewrite the mtrr talbes as previously posted by AsuLUTZKY

http://ubuntuforums.org/showthread.php?p=4766662

However, this did not solve the problem. In the end, I need to use both my RAM and graphics card together for imaging analysis and cannot afford to waste any more time ... so ... I decided that it was time to upgrade !!!

I bought a 512MB ZOTAC 8800 GT card for $170, and sold the ATI HD 2600 for $50 on Craigslist. As I am writing this, this setup is working perfectly, without the hassle of ATI's configuration madness.

In a sense, I am disappointed that I had to upgrade a fairly decent and new video card, but the difference in Linux support between ATI and NVIDIA is too significant to be ignored.

[ASULutzy]

Yep, I still have to use my mtrr fixup script in order to use fglrx and 4 GB of ram

#!/bin/sh
# Fixup /proc/mtrr

echo "disable=2" >| /proc/mtrr
echo "disable=1" >| /proc/mtrr
echo "disable=3" >| /proc/mtrr
echo "disable=4" >| /proc/mtrr
echo "disable=0" >| /proc/mtrr
echo "base=0x00000000 size=0x80000000 type=write-back" >| /proc/mtrr
echo "base=0x80000000 size=0x40000000 type=write-back" >| /proc/mtrr
echo "base=0xC0000000 size=0x10000000 type=write-back" >| /proc/mtrr
echo "base=0x100000000 size=0x20000000 type=write-back" >| /proc/mtrr
echo "base=0x120000000 size=0x10000000 type=write-back" >| /proc/mtrr

edit: I think the problem might also stem from how Asus' memory remap feature works in their BIOS.

I have the ASUS-P5k vanilla, and I think I've seen most of the other people with the ATI + >3.2GB of ram have an ASUS P5k board

[kingtaurus]

I just wanted to make a clarifying point. I don't think this is just an AMD/ATI problem, because according to https://bugs.launchpad.net/linux/+bug/210780 this issue also effects computers with 4GB and an Intel Graphic Card.

sonni_kuba - Hopefully you'll have less issues

[sonni_kuba]

I don't think this is just an AMD/ATI problem

Actually, whatever the problem is, it certainly doesn't apply to the NVIDIA G92 cards, as I got the 8800 GT running with 8 GB of RAM.

Thanks again to both of you for your help, although ubuntu hardware detection has improved vastly since Warthog (if you can remember those days ), there is still potential to grow, though I think the problem here is more to do with ATI ... but given their financial woes, I don't blame them for not investing heavily into *nix graphics driver development.

[pcflyer44]

Hi I am having a similar problem with my system and it seems more like Ubuntu is having problems reading the AGP port than the video cards because I put in a PCI card and it is having no trouble at all. In the system setup I can see that the AGP bridge has been loaded but it can not see the video cards and I have used nvidia and ati.


system
nforce3 motherboard
768MB ram
now running nvidia FX5500 PCI 256MB
want to run ATI X1300 AGP 256MB
first video was nvidia FX5600xt AGP 128MB

[Ubumble]

It looks like the mtrr remapping is the fix I have been searching for. I have one question though, is there something special about the individual registers? I ask because the output from my /proc/mtrr has the same bases and sizes as the ones ASULutzy started with in a previous post, but mine are assigned to different registers. Thanks for any answers or directions to answers.