Public bug reported: 1) OS Ubuntu 10.04.1 LTS 2) faulting package name 'linux-image-2.6.35-22-generic', version '2.6.35-22.34~lucid1' 3) Hardware 'Aces AspireONE 150'.
Due to hardware specific issues to solve MTRR allocation problem 'enable_mtrr_cleanup' boot option was provided (as described here https://help.ubuntu.com/community/AspireOneDiscussion), which work fine with previous kernel 'linux-image-2.6.32-22-generic' version '2.6.32-22.36'. With 2.6.32-22-generic kernel and 'enable_mtrr_cleanup' boot option MTRR table looks like: reg00: base=0x000000000 ( 0MB), size= 1024MB, count=1: write-back reg01: base=0x03f500000 ( 1013MB), size= 1MB, count=1: uncachable reg02: base=0x03f600000 ( 1014MB), size= 2MB, count=1: uncachable reg03: base=0x03f800000 ( 1016MB), size= 8MB, count=1: uncachable reg04: base=0x040000000 ( 1024MB), size= 256MB, count=1: write-combining After installation of new backported kernel (linux-image-2.6.35-22-generic) MTRR table becomes: reg00: base=0x0fffe0000 ( 4095MB), size= 128KB, count=1: write-protect reg01: base=0x0fffc0000 ( 4095MB), size= 128KB, count=1: uncachable reg02: base=0x000000000 ( 0MB), size= 512MB, count=1: write-back reg03: base=0x020000000 ( 512MB), size= 512MB, count=1: write-back reg04: base=0x03f800000 ( 1016MB), size= 8MB, count=1: uncachable reg05: base=0x03f600000 ( 1014MB), size= 2MB, count=1: uncachable reg06: base=0x03f500000 ( 1013MB), size= 1MB, count=1: uncachable reg07: base=0x000000000 ( 0MB), size= 128KB, count=1: uncachable which exactly the same as previous kernel did without 'enable_mtrr_cleanup' boot option. In attachment is output of 'dmesg' command. ProblemType: Bug DistroRelease: Ubuntu 10.04 Package: linux-image-2.6.35-22-generic 2.6.35-22.34~lucid1 ProcVersionSignature: Ubuntu 2.6.35-22.34~lucid1-generic 2.6.35.4 Uname: Linux 2.6.35-22-generic i686 Architecture: i386 Date: Sun Oct 17 16:26:34 2010 InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.2) ProcEnviron: PATH=(custom, user) LANG=ru_UA.utf8 SHELL=/bin/bash SourcePackage: linux-lts-backport-maverick ** Affects: linux-lts-backport-maverick (Ubuntu) Importance: Undecided Status: New ** Tags: apport-bug i386 lucid -- backported kernel [2.6.35] ignore 'enable_mtrr_cleanup' boot command https://bugs.launchpad.net/bugs/662178 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
