Thinkpad T61 locks up / freezes randomly; no flashing caps lock light, mouse cursor can be moved

Since the WLAN was suspected in Bug #300693, I activated the radio kill switch in the BIOS. Now the wireless LED is always off. This makes no difference though. I am still getting very frequent lockups on this machine, always with the symptoms above.

I did two more things. I ran Memtest86+ (v. 2.11) repeatedly on the machine, with no errors. Then I tried installing the 2.6.30-rc7 kernel (image-386, headers-all and headers-386) from http://kernel.ubuntu.com/~kernel-ppa/mainline/v2.6.30-rc7/) and the freezes and symptoms remain the same as with the Jaunty 2.6.28 kernel. I verified that I am booting the 2.6.30 kernel after installing it.

Is there anything else that is kernel-related to try? Could it be the Intel graphics drivers after all? What should I try here? This machine was fine with Intrepid, but now it is useless.

Hi Martin,

This bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? Can you try with the latest development release of Ubuntu? ISO CD images are available from http://cdimage.ubuntu.com/releases/lucid.

If it remains an issue, could you run the following command from a Terminal (Applications->Accessories->Terminal). It will automatically gather and attach updated debug information to this report.

apport-collect -p linux 377194

Also, if you could test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. Please let us know your results.

Thanks in advance.

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This bug report was marked as Incomplete and has not had any updated comments for quite some time. As a result this bug is being closed. Please reopen if this is still an issue in the current Ubuntu release http://www.ubuntu.com/getubuntu/download . Also, please be sure to provide any requested information that may have been missing. To reopen the bug, click on the current status under the Status column and change the status back to "New". Thanks.

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