ATA DVD playback hanging in physrd

[Søren Schmidt]

Nate Lawson wrote:

>>>> On that note ACPI still locks hard both my laptops (ASUS/Acer) on 
>>>> resume, with and upto date -current its back to not even switching 
>>>> on the backlight, so I have no way to tell what happens. On the ASUS 
>>>> that has a serial port even that is totally dead.
>>>>
>>>> However, commenting out the resume code in acpi_cmbat.c make it get 
>>>> so far as to give me a prompt in singleuser mode, but just a simple 
>>>> ls makes in crash with a double fault in the image activation of the 
>>>> ls command, it looks like the vm system is way out to lunch somehow.
>>>>
>>> Try taking /sys/i386/acpi_wakeup.c back to 1.36.
>>
>> That makes things worse actually, now I dont get back from resume, I 
>> do get my backlight turned on though :)
> 
> Did you do this change alone or with leave cmbat resume commented out?

Commented ouit or it doesn't get anywhere on resume..

>>   If that doesn't work,
>>
>>> try reverting /sys/dev/acpica/acpi.c back to 2004/8/1 (mentioned 
>>> previously).  It is important to isolate the cause.
>>
>> That doesn't work, the rest of the code has changed so it wont compile..
> 
> It shouldn't require too much munging to work by itself.

Hmm, didn't look too closely but it looked like defines had changed etc, 
multiple pages of errors so I didn't look any further..

-Søren