Red Hat Bugzilla – Bug 446591
Installs OK but will not run with 4G ram
Last modified: 2009-07-14 13:40:57 EDT
Description of problem:
GDM Doesn't start - black screen when 4G memory installed
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Install 4 G memory
2. Install Fedora ( which works OK )
3. Reboot ( X appears to start ie little arrow appears and then screen goes black )
GDM doesn't start - get a black screen
This is a 915 Intel motherboard with integrated graphics
Installed F9 with 1G memory - everything worked OK
Installed 4G machines gets black screen
Re -installed F9 from DVD with 4G in machine to see what would happen - It
installed perfectly ( graphically ) and after re-boot failed to get to GDM
Took out 2G and machine now works again.
Possibly not GDM but I couldn't think of any other catagory
Can you attach /var/log/Xorg.0.log?
and dmesg and lspci -vv
I get as far as the arrow with the circulating blue blobs then the screen goes
black. The keyboard seems to be working but I can't switch to another console
Created attachment 305649 [details]
Created attachment 305650 [details]
Created attachment 305651 [details]
OK forget that last message the machine works well enough to SSH into
so here are the files
Created attachment 305653 [details]
wierd.. does booting with mem=2048M stop it?
can you try and find a mem=XM lines where it breaks?
this chipset can't actually reference 4GB of RAM, I personally thought it had a
2GB limit :), but it seems to see more for you..
I checked on the Intel site and they say it supports 4G
Just to confirm I am doing this right :-
During boot press a key
Press 'a' to modify kernel arguments
Add mem=2048M to the end of the line
Made no difference - X still hangs the same way
Took out one chip so memory = 3G - BIOS didn't like it at all
and complained that it should have matched amounts of ram
but Fedora runs OK ( KInfoCenter - spelling !! tut !! )
reports 3,181,236,224 bytes
Don't know if this is interesting or not
With 3G in machines updated it - then put it
back to 4G. Fedora now won't start ( as before )
so I booted a Ubuntu live CD 8.04RC 2.6.24 ( it's
the only one I have ) and it starts but System
Monitor only reports 3G of ram - the bios
is happy that there is 4G in there
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