[ltp] diagnosing a freeze on T60p with ubuntu hardy

[Scott Rossillo]

I have the same problem with a ThinkPad T60.  I'm running the newest
Ubuntu 8.04 now but this happened back with Fedora 6 and 7 as well.

My best guess is that it's related to the ATI hardware or ATI proprietary
driver.  The weird thing is that it's a full system hang, not a kernel
panic making me think there's a hardware problem.

Ironically, without a kernel panic, there is no way gather evidence into
what caused the problem.

~ Scott

> What is your graphics card, and what are you doing at the time of the
> freeze?
> I can get exactly the same symptoms (frozen system but with stuttering
> sound) pretty reproducibly by playing a video in mplayer using the gl2
> video output and selecting full-screen. This is with an ATI Mobility
> FireGL V5250.
> Provided I don't play video then 99% of the time it's fine.
>
> Phil
>
> Brad Langhorst wrote:
>> My computer has been freezing once a day or so for the last month or so.
>>
>> By freeze i mean that the sound stutters with whatever was playing, the
>> screen does not draw, and alt+sysreq command have no effect.
>>
>> I must reboot by holding down the power button for a while.
>>
>> Very frustrating.
>>
>> I want to be able say with some certainty whether this problem is
>> hardware or software related.
>> 
>> I'm leaning toward a hardware problem  - but I'd like to provide some
>> convincing evidence of that to Lenovo support.
>>
>> I hope I'm not going to have to run with windows for a while to convince
>> them that it's a hardware problem (if in fact it is a hardware problem).
>>
>> I've recently done a fresh installation of Ubuntu hardy which has not
>> caused a change in the frequency of freezes.
>>
>> so far my log of freezes indicates:
>>  - can happen on my desk or on the train
>>  - can happen while listing to music or not
>>  - can happen whether connected to a network or not
>>  - can happen whether VMware is in use or not
>>  - can happen even with normal temperatures on all sensors
>>
>> What other criteria should I examine?
>>
>> Is anyone else with the same hardware (T60p) experiencing this problem
>> with a default Ubuntu hardy installation?
>>
>> thanks for any help on this!
>>
>> brad
>>
>>
>>
>>
>>
>>
>>
>>
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