linux-kernel - Re: [RFC][PATCH 00/17] Fix up the recent SRSO patches

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Date: Tue, 16 Apr 2024 20:14:12 +0000
From: a-development@...teo.de
To: Borislav Petkov <bp@...en8.de>
Cc: x86@...nel.org, linux-kernel@...r.kernel.org, peterz@...radead.org,
 David.Kaplan@....com, Andrew.Cooper3@...rix.com, jpoimboe@...nel.org,
 gregkh@...uxfoundation.org
Subject: Re: [RFC][PATCH 00/17] Fix up the recent SRSO patches

Now that it is deactivated, the machine no longer suspends!

https://up.tail.ws/txt/non-working-suspend.txt

> Then, the other thing you could try is whether suspend works without
> that proprietary crap.

I refuse. I can explain. I tried lots of capture cards that stated they 
support uvcvideo and linux.
This problem existed prior and I need it for work on this machine.
But none of them worked reliably or would straight up glitch out.
Thats because they do not implement it properly.

It had to be a product from Magewell, who manage an array of bash 
scripts and the AUR maintainer gets updates if something breaks, too. 
Why do I use a PCIe HDMI Capture Card?
I need to use Cameras and Displays.

As for USB Cameras, unless its a product from e.g Logitech, they kept 
giving me similar headaches.
And that included an older setup that ran a Intel i7 8700K as well.

Thx.

On 16.04.2024 10:45, Borislav Petkov wrote:
> On Tue, Apr 16, 2024 at 06:48:54AM +0000, a-development@...teo.de 
> wrote:
>> It worked, it worked!
>> 
>> https://up.tail.ws/txt/working-suspend.txt
>> 
>> I've tested it now quite some time.
>> But, I also had to start using 6.6.26-1-lts because my magewell 
>> capture card
>> wouldn't without.
> 
> Right, that thing I guess:
> 
> [Mon Apr 15 18:37:58 2024] ProCapture: loading out-of-tree module 
> taints kernel.
> [Mon Apr 15 18:37:58 2024] ProCapture: module verification failed:
> signature and/or required key missing - tainting kernel
> 
> So, machines do suspend even with SRSO enabled and since your machine 
> is
> affected, you probably should try without spec_rstack_overflow=off to
> see if it works with the new kernel.
> 
> Then, the other thing you could try is whether suspend works without
> that proprietary crap.
> 
> And then we can see.
> 
> Thx.