Aaron Johnson, could you please provide the full computer model as noted
on the sticker?
** Tags added: needs-full-computer-model
** Description changed:
I have been troubleshooting an interesting bug on my Toshiba L840 laptop
for a number of months now. This bug affects all versions of
** Changed in: linux
Status: Confirmed = Expired
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https://bugs.launchpad.net/bugs/1090715
Title:
slow and sporadic hard drive write performance on ivy bridge (Toshiba
L840
Update-
So I never really got to the bottom of why this is happening on the 32-bit pae
3.7 kernel... I decided to install 64-bit ubuntu raring (13.04), and guess
what, it works flawlessly.
So apparently 32-bit kernels on new hardware is a bad idea, which I should have
known I suppose, but it's
Look at my speed tests now :
acjohnson@UbuntuRaringx64:~$ dd if=/dev/zero of=/tmp/output bs=8k count=10k; rm
-f /tmp/output
10240+0 records in
10240+0 records out
83886080 bytes (84 MB) copied, 0.0583449 s, 1.4 GB/s
acjohnson@UbuntuRaringx64:~$ dd if=/dev/zero of=/tmp/output bs=8k count=10k; rm
** Changed in: linux
Status: Unknown = Confirmed
** Changed in: linux
Importance: Unknown = High
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https://bugs.launchpad.net/bugs/1090715
Title:
slow and sporadic hard drive
** Also affects: linux via
http://bugzilla.kernel.org/show_bug.cgi?id=51771
Importance: Unknown
Status: Unknown
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https://bugs.launchpad.net/bugs/1090715
Title:
slow and
Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v3.7 kernel[0] (Not a kernel in the daily directory) and install both
the linux-image and linux-image-extra .deb packages.
If this bug is fixed in the
Okay, I went ahead and installed the mainline kernel from the following
location:
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.7-raring/
I rebooted and now I am running the following kernel version:
acjohnson@Satellite-L840:~$ uname -a
Linux Satellite-L840 3.7.0-030700-generic #201212102335
This issue appears to be an upstream bug, since you tested the latest
upstream kernel. Would it be possible for you to open an upstream bug
report[0]? That will allow the upstream Developers to examine the
issue, and may provide a quicker resolution to the bug.
Please follow the instructions on
Thank you. Upstream bug has now been posted:
https://bugzilla.kernel.org/show_bug.cgi?id=51771
** Bug watch added: Linux Kernel Bug Tracker #51771
http://bugzilla.kernel.org/show_bug.cgi?id=51771
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