Monday, January 24

Kernel 2.6.10 on a Toshiba laptop

I upgraded the Linux kernel to 2.6.10 about a week ago. I had been using 2.6.8. Here are some impressions.

There were a few pleasant changes. I have already covered CD packet writing earlier. ACPI support has also improved a bit. A minor but very pleasant detail is that my laptop automatically resumes now when I open the lid.

I was surprised to find out that suspend-to-disk kind-of-works now. It used to hang during resume, now it resumes successfully, but maims USB. After resuming the kernel starts spewing messages such as these:

Jan 16 17:26:42 localhost kernel: usb 1-2: khubd timed out on ep0out
Jan 16 17:26:49 localhost kernel: usb 1-2: khubd timed out on ep0in
As my USB mouse stops working after this, suspend-to-disk is still not viable for everyday use to me, but at least it seems to be getting there.

I have also noticed that the clock would at least a few hours off after each resume. I have worked around by saving the system time to the hardware clock right before suspending, and then restoring the time just after resuming. Nonetheless I keep finding premature Evolution alerts after resuming. Really annoying, I hope this will be fixed.

3D support in X still breaks after suspend. It's not really important though, I can restart the X server when I really need 3D working. Besides, it is quite slow anyway.

People who own a Toshiba A15-S157 laptop might find my kernel configuration and suspend script useful.


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