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Bug#1006149: linux-image-5.16.0-1-686: Fails to boot on T41 Thinkpads



On 3/8/22 22:54, Axel Beckert wrote:
> Hi Damien,
> 
> Damien Le Moal wrote:
>>> Damien Le Moal wrote:
>>>> In the bug report, I did not see a dmesg output for a failed boot. But I
>>>> guess it is because the user cannot capture it.
>>>
>>> Correct.
>>
>> Could you try taking a video of the boot messages ?
> 
> Did that now.
> 
> https://noone.org/debian/Bug-Reports/1006149/DSCN5255.MOV
> 
> (82 MB, no debugging yet)
> 
> Note that this is from an IBM ThinkPad A31
> (https://www.thinkwiki.org/wiki/Category:A31), not from a ThinkPad
> T41 as with the original bug reporter, i.e. it's even a bit older.
> 
>> However, since things are working with 5.15, I would like to
>> understand what is going on and which part of the device scan is
>> failing. For that, booting with logging_level=7 (debug) and having
>> the kernel messages would help.
> 
> Ok, did another one, this time with "debug loglevel=7" added on the
> kernel commandline by editing it in GRUB:
> 
> https://noone.org/debian/Bug-Reports/1006149/DSCN5259.MOV

Thanks for this. But unfortunately, it does not tell us much as to what
is going on... Could you send me dmesg output of a clean boot with 5.15
kernel ? Also, once booted in 5.15, install sg3utils and run these commands:

sudo sg_sat_read_gplog --log=0 --page=0 /dev/sdX
sudo sg_sat_read_gplog --log=0 --page=0 --dma /dev/sdX

(replace sdX with your drive name, likely sda or sdb)

And let me know the result of these please.

> 
> (94 MB, with debugging)
> 
> HTH. (Sorry for all that zooming out at the beginning of the videos.
> For some reason my digital camera doesn't seem to use the same zoom
> setting or maybe resolution for videos as the one it uses for pictures
> (and hence also for the preview before starting the recording).
> 
> 		Regards, Axel


-- 
Damien Le Moal
Western Digital Research


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