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jussit
19th May 2007, 04:45 PM
See Bugzilla ticket for details:

https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=239931

Shortly, system runs fine with 2GB RAM installed. After adding 2GB more the system boots extremely slowly. The computer is absolutely useless. If adding kernel parameter mem=4G the computer is fast again, but only 3GB RAM is detected.

Anyone here having same problems and perhaps some workaround for the memory detection issue?

lazlow
19th May 2007, 05:05 PM
Try this thread: http://forums.fedoraforum.org/forum/showthread.php?t=148488&highlight=4gb+ram

jussit
20th May 2007, 02:39 PM
Try this thread: http://forums.fedoraforum.org/forum/showthread.php?t=148488&highlight=4gb+ram

Using x86_64 version of FC7 test4. No kernel-PAE available there. Without any parameters kernel sees and detects full 4GB memory, but the system goes absolutely too slow to do anything.

jussit
11th June 2007, 04:44 AM
This one helped:

http://forums.fedoraforum.org/showthread.php?t=157232

Shortly, installing BIOS release 1669 makes the system to detect 4 GB RAM correctly. Those BIOS releases published after that upto the currently latest one 1687 has this problem and the same BIOS code is used in several Intel G965 mobo and not only DG965WH. Have seen following list about effected models: DP965LT, DG965SS,
DG965RY, DG965PZ, DG965OT, DG965MS, DG965MQ, DQ963FX, DQ963GS