This bug can be closed as the issue was fixed with a BIOS update from Unicorn.
Thanks for your help. ** Description changed: I am using a Unicorn computers ENDAT-2794A motherboard http://www.unicorn-computer.com.tw/products/itx/2794a.html With the stock latest release of ubuntu 11.10. The boot process is very slow and jams for a period of time, when it is booted I cannot install to the harddrive as it reports an IO error. Looking at dmesg | grep ata I see that there are lots of 'failed command READ DMA EXT' errors. After some googling I have found that there was a previous bug with the ata_piix driver (the driver in use) with the ICH7, where the UDMA rate was set to 133 but the max supported by hardware is 100. However, in the dmesg I see that it is backing right down to 33, I presume that this point is where the system becomes responsive again. Best Regards, Ben ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: linux-image-3.0.0-12-generic 3.0.0-12.20 ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4 Uname: Linux 3.0.0-12-generic i686 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 1.23-0ubuntu3 Architecture: i386 AudioDevicesInUse: - USER PID ACCESS COMMAND - /dev/snd/controlC0: ubuntu 4193 F.... pulseaudio + USER PID ACCESS COMMAND + /dev/snd/controlC0: ubuntu 4193 F.... pulseaudio CRDA: Error: [Errno 2] No such file or directory Card0.Amixer.info: - Card hw:0 'Intel'/'HDA Intel at 0xfdff8000 irq 44' - Mixer name : 'Realtek ALC888' - Components : 'HDA:10ec0888,10ec0888,00100001' - Controls : 40 - Simple ctrls : 22 + Card hw:0 'Intel'/'HDA Intel at 0xfdff8000 irq 44' + Mixer name : 'Realtek ALC888' + Components : 'HDA:10ec0888,10ec0888,00100001' + Controls : 40 + Simple ctrls : 22 CasperVersion: 1.287 Date: Tue Nov 29 11:49:55 2011 IwConfig: - lo no wireless extensions. - - eth0 no wireless extensions. - - eth1 no wireless extensions. + lo no wireless extensions. + + eth0 no wireless extensions. + + eth1 no wireless extensions. LiveMediaBuild: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012) ProcEnviron: - PATH=(custom, no user) - LANG=en_US.UTF-8 - SHELL=/bin/bash + PATH=(custom, no user) + LANG=en_US.UTF-8 + SHELL=/bin/bash ProcKernelCmdLine: noprompt cdrom-detect/try-usb=true persistent file=/cdrom/preseed/hostname.seed boot=casper initrd=/casper/initrd.lz quiet splash -- RelatedPackageVersions: - linux-restricted-modules-3.0.0-12-generic N/A - linux-backports-modules-3.0.0-12-generic N/A - linux-firmware 1.60 + linux-restricted-modules-3.0.0-12-generic N/A + linux-backports-modules-3.0.0-12-generic N/A + linux-firmware 1.60 RfKill: - + SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 06/10/2009 dmi.bios.vendor: Phoenix Technologies, LTD dmi.bios.version: 6.00 PG dmi.board.name: 945GSE dmi.chassis.type: 3 dmi.modalias: dmi:bvnPhoenixTechnologies,LTD:bvr6.00PG:bd06/10/2009:svn:pn:pvr:rvn:rn945GSE:rvr:cvn:ct3:cvr: ** Changed in: linux (Ubuntu) Status: Confirmed => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/897777 Title: DMA bug with ICH7-M To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/897777/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
