XPost: linux.debian.bugs.dist   
   From: post@ralfj.de   
      
   Hi Uwe,   
      
   On 18.12.25 10:18, Uwe Kleine-König wrote:   
   > Hello Ralf,   
   >   
   > On Wed, Dec 17, 2025 at 08:31:34PM +0100, Ralf Jung wrote:   
   >>> On Wed, Dec 17, 2025 at 02:05:41PM +0100, Ralf Jung wrote:   
   >>>> By trying out various snapshot kernels, I now got it nailed down to a   
   single   
   >>>> major version bump:   
   >>>>   
   >>>> 6.13.11-1~exp1 is still good.   
   >>>> 6.14.6-1~exp1 has the problem.   
   >>>   
   >>> While I understand from the context you gave that might not be the   
   >>> easiiest thing to make possible, but I think the most effective next   
   >>> step would be now to try upstream 6.13 and upstream 6.14.6 and then   
   >>> bisect.   
   >>   
   >> There's probably a subfolder I can restrict this to? Which folder has the   
   >> webcam drivers? (And maybe the v4l infrastructure.)   
   >   
   > I would not recommend that. The problem might also be triggered by a   
   > change to your USB controller's driver or something in the graphics   
   > stack.   
      
   Fair, I didn't realize how entangled the webcam stack is these days.   
      
   Thanks for forwarding this to a kernel maintainer!   
      
   Kind regards,   
   Ralf   
      
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