XPost: linux.debian.bugs.dist   
   From: gkoura@gmail.com   
      
   Dear Salvatore,   
   thank you for your response!   
   As a novice user of "reportbugs" , I just filed the report of this bug   
   using the "reportbug" application. Please contact me for any information   
   that i may be able to provide and that i have omitted to provide.   
      
   Regards, Giorgos   
      
   On Sun, Nov 23, 2025 at 5:21 PM Salvatore Bonaccorso    
   wrote:   
      
   > Control: tags -1 + moreinfo   
   >   
   > Hi Giorgos,   
   >   
   > Thanks for your report.   
   >   
   > On Sun, Nov 23, 2025 at 11:59:10AM +0200, Giorgos Kourafas wrote:   
   > > Package: linux   
   > > Version: 6.12.48+deb13-1   
   > > Severity: serious   
   > > Tags: upstream regression ftbfs Control: affects -1 + src:linux   
   > >   
   > > Dear Maintainer,   
   > >   
   > > The newer kernel image, **6.12.48+deb13-amd64**, causes a black screen   
   > > during boot on a Sony Vaio VPCCW1S1E laptop. The issue is a   
   > **regression**,   
   > > as the previous stable kernel, **6.1.40-amd64, works perfectly** with the   
   > > open-source Nouveau driver. ### Hardware Affected * **Laptop Model:**   
   > Sony   
   > > Vaio VPCCW1S1E * **Graphics Card:** **NVIDIA GT216M (GeForce GT 230M)**   
   > ###   
   > > Diagnostic Information When booting the 6.12.48+deb13 kernel, the system   
   > > fails to initialize any display output, including virtual consoles   
   > (TTYs),   
   > > preventing a user from reaching the login prompt. By checking the system   
   > > logs from a failed boot, the following critical error message was found,   
   > > indicating a driver crash related to the GPU's core or power management:   
   > > nouveau 0000:01.00.0: gr: TRAP_PROP TP1 - 00000040 [RT-FAULT] ###   
   > > Troubleshooting Attempts   
   > > All attempts to fix the issue via kernel parameters on the 6.12.48 kernel   
   > > have failed: 1. Adding **'nouveau.modeset=0'** 2. Adding   
   > > **'nouveau.runpm=0'** (disabling runtime power management) 3.   
   > Blacklisting   
   > > the Nouveau driver completely.   
   > > The only way to boot the 6.12 kernel is by using the   
   > > **'modprobe.blacklist=nouveau'** or **nomodeset=1** parameter, which   
   > forces   
   > > a generic VESA driver with poor resolution and no acceleration.   
   >   
   > 6.12.48-1 is not the newest kernel in Debian trixie, please thus test   
   > as well with 6.12.57-1 and report back if the issue persists.   
   >   
   > We need full kernel logs and information about the hardware, ideally   
   > you collect the information with reportbug following up on this bug.   
   >   
   > If the issue persist in 6.12.57-1, can you then please bisect the   
   > changes between 6.12.43 and 6.12.48 (assuming you upgraded from   
   > 6.12.43 to 6.12.48). Let us know if you need more psecific indication   
   > on how to do the bisection.   
   >   
   > Regards,   
   > Salvatore   
   >   
      
   
Dear Salvatore,
thank you for your   
   response!
As a novice user of "reportbugs" , I just filed   
   the report of this bug using the "reportbug" application. Please   
   contact me for any information that    
   i may be able to provide and that i have omitted to provide.

Regards, Giorgos 

On   
   Sun, Nov 23, 2025 at 5:21 PM Salvatore    
   Bonaccorso <carnil@debian.org>   
   wrote:
Control: tags   
   -1 + moreinfo
   
   
   
   Hi Giorgos,
   
   
   
   Thanks for your report.
   
   
   
   On Sun, Nov 23, 2025 at 11:59:10AM +0200, Giorgos Kourafas wrote:
   
   > Package: linux
   
   > Version: 6.12.48+deb13-1
   
   > Severity: serious
   
   > Tags: upstream regression ftbfs Control: affects -1 + src:linux
   
   > 
   
   > Dear Maintainer,
   
   > 
   
   > The newer kernel image, **6.12.48+deb13-amd64**, causes a black screen
   
   > during boot on a Sony Vaio VPCCW1S1E laptop. The issue is a   
   **regression**,
   
   > as the previous stable kernel, **6.1.40-amd64, works perfectly** with   
   the
   
   > open-source Nouveau driver. ### Hardware Affected * **Laptop Model:**   
   Sony
   
   > Vaio VPCCW1S1E * **Graphics Card:** **NVIDIA GT216M (GeForce GT 230M)**   
   ###
   
   > Diagnostic Information When booting the 6.12.48+deb13 kernel, the   
   system
   
   > fails to initialize any display output, including virtual consoles   
   (TTYs),
   
   > preventing a user from reaching the login prompt. By checking the   
   system
   
   > logs from a failed boot, the following critical error message was   
   found,
   
   > indicating a driver crash related to the GPU's core or power   
   management:
   
   > nouveau 0000:01.00.0: gr: TRAP_PROP TP1 - 00000040 [RT-FAULT] ###
   
   > Troubleshooting Attempts
   
      
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