[Bug 224404] Re: MTRR is not properly setup on Intel Northbridge Chipset (P35, X38, X48) with more than 3GB RAM and with Memory Remapping Enabled
That's a very good question Greg :P On the other hand, reconfiguring mttr tables won't damage your hardware, but can slow down the computer like a 8086, or cause a total crash (without BSOD xD), requiring you to reset manually. I needed two crashes before finding a compatible mtrr table. It's very important to disable all the old registers before adding new ones, or you will crash again. I apologize for my poor English, i have it a little bit rusty. Good luck. -- MTRR is not properly setup on Intel Northbridge Chipset (P35, X38, X48) with more than 3GB RAM and with Memory Remapping Enabled https://bugs.launchpad.net/bugs/224404 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 226672] Re: X server won't start with 4 Gigs of ram
Diving on many forums I've found a "patch", that's reconfiguring mtrr tables before kdm (or gdm, or xdm) starts. This code on a script worked for me, note that the memory sizes may change depending on the graphics card memory size. #Begin of file echo "disable=0" >| /proc/mtrr echo "disable=1" >| /proc/mtrr echo "disable=4" >| /proc/mtrr echo "disable=2" >| /proc/mtrr echo "disable=3" >| /proc/mtrr echo "disable=5" >| /proc/mtrr #I had six registers before echo "base=0x size=0x8000 type=write-back" >| /proc/mtrr echo "base=0x8000 size=0x4000 type=write-back" >| /proc/mtrr echo "base=0xC000 size=0x1000 type=write-back" >| /proc/mtrr echo "base=0x1 size=0x2000 type=write-back" >| /proc/mtrr echo "base=0x12000 size=0x1000 type=write-back" >| /proc/mtrr #after only five #End of file I've noticed that memory used is always bigger than 512Mb (arround 700~750) so I think that with this fix memory available is only 3,5G (as a 32bit system), the last 512 can't be used, but, at last, it works. I'm still waiting for a real solution. Saludos! -- X server won't start with 4 Gigs of ram https://bugs.launchpad.net/bugs/226672 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 224404] Re: MTRR is not properly setup on Intel Northbridge Chipset (P35, X38) and with Memory Remapping Enabled
I've found a possible "solution", check it in: https://bugs.launchpad.net/ubuntu/+source/linux-restricted- modules-2.6.24/+bug/226672 Saludos! -- MTRR is not properly setup on Intel Northbridge Chipset (P35,X38) and with Memory Remapping Enabled https://bugs.launchpad.net/bugs/224404 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 226672] Re: X server won't start with 4 Gigs of ram
** Attachment added: "Xorg.0.log" http://launchpadlibrarian.net/14377017/Xorg.0.log -- X server won't start with 4 Gigs of ram https://bugs.launchpad.net/bugs/226672 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 226672] Re: X server won't start with 4 Gigs of ram
There's my Xorg.0.log, and there's my mtrr table: reg00: base=0x ( 0MB), size=4096MB: write-back, count=1 reg01: base=0xe000 (3584MB), size= 512MB: uncachable, count=1 reg02: base=0xd000 (3328MB), size= 256MB: uncachable, count=1 reg03: base=0x1 (4096MB), size=1024MB: write-back, count=1 reg04: base=0x13000 (4864MB), size= 256MB: uncachable, count=1 reg05: base=0xcff0 (3327MB), size= 1MB: uncachable, count=1 I don't know much about mtrr, but, having 4Gb of ram and 512Mb of video ram, where are these extra 256 Mb in reg04??. Maybe this weekend I can spend some time learning about. Saludos! ** Attachment added: "tablamtrr4gb.txt" http://launchpadlibrarian.net/14377009/tablamtrr4gb.txt -- X server won't start with 4 Gigs of ram https://bugs.launchpad.net/bugs/226672 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 226672] Re: X server won't start with 4 Gigs of ram
Also, the motherboard chipset is the new X48 by Intel, and the proccessor is a Core2Duo E8400 (wolfdale). I found over google, some other people having the same problem with amd or intel, with ati or nvidia graphics so i think that the problem is not dependent on the platform of the system. Saludos! -- X server won't start with 4 Gigs of ram https://bugs.launchpad.net/bugs/226672 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 226672] Re: X server won't start with 4 Gigs of ram
I'll do tonigth, but I spent some time checking xorg logs, but i couldn't find something wrong, and the system boots normally with 3 gigs of ram, or less, the problem is only with 4 gigas or more (I think, I have only 4 gigs to check :P). I apologize for my poor English, i have it a little bit rusty. -- X server won't start with 4 Gigs of ram https://bugs.launchpad.net/bugs/226672 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 226672] [NEW] X server won't start with 4 Gigs of ram
Public bug reported: AMD64 Kubuntu Hardy Heron fresh installation. 4 Gigs of Ram Ati HD3870 (also 3850, HD2xxx, Xxxx series) fgrlx driver (standard one, downloaded from ati, or installed via envy) The X won't start with 4 gigs of ram installed using fglrx driver, with 3 or less, system starts normally. It seems to be a problem with mtrr tables. ** Affects: ubuntu Importance: Undecided Status: New -- X server won't start with 4 Gigs of ram https://bugs.launchpad.net/bugs/226672 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
