[ubuntu-x] Q-series LTS Backport - poor hard disk write performance bug

Timo Aaltonen tjaalton at ubuntu.com
Fri Sep 28 06:46:13 UTC 2012

On 28.09.2012 06:09, Aaron C Johnson wrote:
> I would like to post a bug for the linux-image-generic-lts-quantal
> package.  I guess since I'm not a team member I am unable to post to the
> Bugs section on launchpad.
> I am running Ubuntu 12.04 32-bit on a brand new Toshiba L840 laptop and
> this bug is really driving me nuts. I am unable to have a stable system
> because I am being haunted by another kernel bug on the stock 12.04 kernel:
> https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/993187/+index?comments=all

If you could file a new bug ('ubuntu-bug xorg') there's at least a slim
chance of it getting fixed for 12.04 proper. I've tried to beat some
sense to the above bug but people still insist on commenting there..

'bisecting' with mainlike kernels will help to isolate the fix:


> Now with the 3.5 kernel the video issue is resolved but it is just as
> unusable because my hard drive write performance drops down to 40-70
> Mbps which really isn't the problem; the problem is that over a short
> period of time the write performance on my drive will drop down to
> something like 1.5 Mbps until I reboot...
> I will post more details, dmesg output, logs, etc. if I can post an
> official bug for this package.

just file a bug against the kernel ('ubuntu-bug linux'), since the bug
should be valid for quantal too.


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