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[Bug 1107150] Re: B75 Chipset I/O Problems
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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B75 Chipset I/O Problems
Status in “linux” package in Ubuntu:
I built a new system and installed Ubuntu 12.10. The system has the
Samsung 840 Pro 128 GB
Intel i7 3770
32 GB Ram
Western Digital 1 TB Black (mounted as /home)
Western Digital 3 TB Green (mounted as /media/data_drive)
The initial Ubuntu 12.10 install took almost 6 hours as transfer rates
were very slow. After reboot everything appeared very fast. However
when I did an "apt-get update" the download took 20 seconds and the
processing of lists took 19 minutes.
I had 12.10 installed on another computer which was working great
(older Althon system) so I installed the drive and tested the new
machine. It suffered the same performance problems.
I installed Windows 7 and performed speeds tests, it reported great
I installed 12.04 onto the 1 TB drive and it did not suffer the same
performance problems. Everything ran great.
I then upgraded 12.10 to 13.04 (January 27, 2013) and it too suffered
from the performance issue.
It appears that a change between 12.04 to 12.10 impacts AHCI based
systems specifically running the Intel B75 chipset. I am not certain
but I think that either the motherboard is misrepresenting something
(that 12.04 ignores but it impacts 12.10) or the kernel is not
detecting the system correctly.
I created a couple of pastebins with data collected:
12.10 Install: http://pastebin.ubuntu.com/1561660/
12.04 Live Disk (was checked against installed version and data is mostly the same): http://paste.ubuntu.com/1565140/
I have a thread on the ubuntu forums that may provide additional
I also started an e-mail thread to the ubuntu-users mailing list:
I have done a lot of troubleshooting and I feel that the problem must
either be the kernel or the bios misrepresenting information. In
either case I am stuck without any idea of where to go next with the
debuging and diagnoses path.
If any additional information needs to be collected, please let me know and I will work to assist.
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
USER PID ACCESS COMMAND
/dev/snd/controlC1: bakers 1729 F.... pulseaudio
/dev/snd/controlC0: bakers 1729 F.... pulseaudio
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
Card hw:0 'PCH'/'HDA Intel PCH at 0xf7110000 irq 45'
Mixer name : 'Realtek ALC887-VD'
Components : 'HDA:10ec0887,1458a002,00100302'
Controls : 39
Simple ctrls : 20
Card hw:1 'NVidia'/'HDA NVidia at 0xf7080000 irq 17'
Mixer name : 'Nvidia GPU 42 HDMI/DP'
Components : 'HDA:10de0042,14583553,00100100'
Controls : 18
Simple ctrls : 3
DistroRelease: Ubuntu 12.04
lo no wireless extensions.
eth0 no wireless extensions.
MachineType: Gigabyte Technology Co., Ltd. To be filled by O.E.M.
Package: linux (not installed)
PATH=(custom, no user)
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-36-generic-pae root=UUID=4f30252c-fa56-4d53-be78-117cddab55f4 ro quiet splash
ProcVersionSignature: Ubuntu 3.2.0-36.57-generic-pae 3.2.35
Tags: precise running-unity staging
Uname: Linux 3.2.0-36-generic-pae i686
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
dmi.bios.vendor: American Megatrends Inc.
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.product.name: To be filled by O.E.M.
dmi.product.version: To be filled by O.E.M.
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
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