[gentoo-user] Re: mtrr: no MTRR for e8000000,4000000 found

[Mark Knecht <markknecht@gmail.com>]

On Sun, Jul 19, 2009 at 6:24 PM, Mark Knecht<markknecht@gmail.com> wrote:
<SNIP>
> myth12 mythtv # cat /var/log/Xorg.0.log | grep EE
> Current Operating System: Linux myth12 2.6.29-gentoo-r5 #4 PREEMPT Fri
> Jun 26 09:51:45 PDT 2009 i686
>        (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
> (II) Loading extension MIT-SCREEN-SAVER
> (EE) RADEON(0): [dri] RADEONDRIGetVersion failed to open the DRM
> myth12 mythtv #
>
>
> myth12 linux # dmesg | tail -n 5
> [   17.486289] usb 1-0:1.0: uevent
> [   19.612246] eth0:  setting full-duplex.
> [   30.350021] eth0: no IPv6 routers present
> [  433.541492] pci 0000:01:05.0: PCI INT A -> Link[LNKA] -> GSI 11
> (level, low) -> IRQ 11
> [  435.609192] mtrr: no MTRR for e8000000,4000000 found


myth12 linux # cat /proc/mtrr
reg00: base=0x000000000 (    0MB), size=  256MB, count=1: write-back
reg01: base=0x00c000000 (  192MB), size=   64MB, count=1: uncachable
myth12 linux #

Seems that maybe this machine really doesn't have an MTRR at e8000000.

Are MTRR's necessary? This machine ran a much older kernel - circa
2.6.19 - until I tried to upgrade the xorg server. Possibly I was
never using MTRR and having it turned on at all is a mistake?

Thanks,
Mark