udldrm does not recover from powersave? Re: udldrmfb: causes WARN in i915 on X60 (x86-32)

[Thomas Zimmermann]

Hi

Am 25.02.21 um 10:53 schrieb Pavel Machek:
> Hi!
> 
>>> This is in -next, but I get same behaviour on 5.11; and no, udl does
>>
>> Thanks for reporting. We are in the process of fixing the issue. The latest
>> patch is at [1].
>>
> 
> Thank you, that fixes the DMA issue, and I can use the udl.
> 
> ...for a while. Then screensaver blanks laptop screen, udl screen
> blanks too. Upon hitting a key, internal screen shows up, udl does
> not.
> 
> I try rerunning xrandr ... --auto, but could not recover it.
> 
> Any ideas?

Seems unrelated. I tested for the issue with the last good revision and 
with the latest fix applied. I use Gnome/X11.

With both kernels, the udl adapter's display came back after suspending. 
So I'd attribute the problem to something else.

Best regards
Thomas

> 
> Best regards,
> 								Pavel
> 
> 
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-- 
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Felix Imendörffer

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