Xwindows on HP DL380 RHEL 4 ES (write-combining)

[x6d696168]

Hello,

I have a first gen DL380 thats having issues with Xwindows on RHEL 4 ES. Running 'system-config-display' works, it loads X, I am able to configure my display and I'm happy. But after saving that display and trying to start X, it fails. Its very odd that X works in the 'system-config-display' with its autobuilt config, but not with the saved config.

(WW) ATI(0): Failed to set up write-combining range (0xf6000000,0x800000)

That is the error display on screen. Looking at the kernel log at the same time I see:

Mar 28 15:58:27 SERVERNAME kernel: mtrr: no more MTRRs available.

Looking at /proc/mtrr:
# cat /proc/mtrr
reg00: base=0x00000000 ( 0MB), size=2048MB: write-back, count=1
reg01: base=0x400020000 (16384MB), size= 64KB: uncachable, count=1
reg02: base=0x400040000 (16384MB), size= 64KB: uncachable, count=1
reg03: base=0x400060000 (16384MB), size= 64KB: uncachable, count=1
reg04: base=0x400080000 (16384MB), size= 64KB: uncachable, count=1
reg05: base=0x4000a0000 (16384MB), size= 64KB: uncachable, count=1
reg06: base=0x4000c0000 (16384MB), size= 64KB: uncachable, count=1
reg07: base=0x4000e0000 (16384MB), size= 64KB: uncachable, count=1

Generally, you can add the range to mtrr with echo like:
"echo "base=0xef000000 size=0x800000 type=write-combining" > /proc/mtrr"
But this does not work.

When installing the X install interface works, but this server was installed with a minimal kickstart based image. Now the owner wants to install Oracle on the system, and of course Oracle requires X to install. Re-installing with X is not a fix.

Any Ideas?

[Alexander Chuzhoy]

I think you miss some necessary files/packages.
With yum utility you can overcome it.
Presuming the server is connected to the internet in command line:
yum groupinstall "X Window System"

[Vitaly Karasik_1]

I don't sure that MTRR mesages are relevant for X Window problem.
Which display driver do you use?

Rgds,
Vitaly

[x6d696168]

This is RHEL, yum is not included. I could install it, but I'm certain all the packages are installed. The error above basically states that its not able to allocate memory for the video ram for the card. So I'm fairly ceratain that MTRR's are applicable here, and that it has nothing to do with missing packages since I clearly have enough of X to run a minimal X environment for 'system-config-display'.

[Vitaly Karasik_1]

Can you please send us your xorg.conf?

[x6d696168]

Here

[man ku]

it has been a while since the last reply. i dont have suggestion/solution you may need but rather i'm seeking help to achieve the same objective like you - to install (minimal) rhel 4as and topping up the o.n.l.y necessary packages before putting the oracle (both db and as) software in.

if you've successfully went thru this and happen to have it documented, i would be touched if you could share the info with me. could you send to kuman2k@yahoo.com. tqvm