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<p><font face="Arial">Package: nvidia-driver<br>
Version: 550.163.01-2<br>
Severity: normal<br>
<br>
Dear Maintainer,<br>
<br>
System Information:<br>
<br>
OS: Debian 13 “Trixie” (fresh upgrade from Debian 12)<br>
Driver Version: 550.163.01<br>
Display Server: X11<br>
Kernel: 6.12.48+deb13-amd64<br>
Problem Description:<br>
After upgrading from Debian 12 to Debian 13, monitors do not
wake up after<br>
suspend. The system appears to resume (fans spin up, lights come
on) but<br>
displays remain black and unresponsive.<br>
<br>
Reproducible Steps:<br>
<br>
Fresh Debian 13 installation with NVIDIA 550.163.01 drivers<br>
Run sudo systemctl suspend<br>
Wake system (keyboard/mouse/power button)<br>
Result: Black screens, system appears hung<br>
Key Finding:<br>
Uninstalling NVIDIA drivers completely resolves the issue -
suspend/resume<br>
works perfectly with nouveau drivers.<br>
<br>
Attempted Solutions (all failed):<br>
<br>
Added nvidia.NVreg_PreserveVideoMemoryAllocations=1<br>
Added nvidia.NVreg_EnableS0ixPowerManagement=1<br>
Added nvidia.NVreg_EnableGpuFirmware=0<br>
Enabled nvidia-suspend.service, nvidia-hibernate.service,
nvidia-resume.service<br>
Installed nvidia-suspend-common package<br>
Expected Behavior:<br>
Monitors should wake up properly after suspend, as they do with
nouveau<br>
drivers.<br>
<br>
Additional Notes:<br>
This appears to be a regression - suspend/resume worked fine on
Debian 12 with<br>
earlier NVIDIA drivers. Issue persists with X11 (not
Wayland-specific).<br>
<br>
I will attach nvidia-bug-report.sh output if this helps with
diagnosis.</font></p>
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