A few days ago the kernel 3.12+55 has hit Debian Testing (Jessie) so the linux-image-amd64 pulls the new kernel, and therefore also new nvidia-kernel-amd64 packages shipping 379.82.
Problem – the xorg nvidia driver is still 379.76 which breaks the current xserver with kernel 3.12 and nvidia drivers in current Debian Jessie.
# less /var/log/gdm3/:0.log (**) NVIDIA(0): Depth 24, (--) framebuffer bpp 32 (==) NVIDIA(0): RGB weight 888 (==) NVIDIA(0): Default visual is TrueColor (==) NVIDIA(0): Using gamma correction (1.0, 1.0, 1.0) (**) NVIDIA(0): Stereo disabled by request (**) NVIDIA(0): Enabling 2D acceleration NVIDIA: API mismatch: the NVIDIA kernel module has version 319.82, but this NVIDIA driver component has version 319.76. Please make sure that the kernel module and all NVIDIA driver components have the same version. (EE) NVIDIA(0): Failed to initialize the NVIDIA kernel module. Please see the (EE) NVIDIA(0): system's kernel log for additional error messages and (EE) NVIDIA(0): consult the NVIDIA README for details. (EE) NVIDIA(0): *** Aborting *** (EE) NVIDIA(0): Failing initialization of X screen 0 (EE) Screen(s) found, but none have a usable configuration. (EE) Fatal server error: (EE) no screens found(EE) (EE) Please consult the The X.Org Foundation support at http://wiki.x.org for help. (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information. (EE) (EE) Server terminated with error (1). Closing log file.
Temporary solution – remove the current kernel and step down to 3.11 and nvidia 319.76. But beware – that will remove the linux-image-amd64 and nvidia-kernel-amd64 meta packages pulling the latest kernel/nvidia packages too!
# apt-get remove linux-image-3.12-1-amd64 # tail /var/log/apt/history.log Start-Date: 2014-01-30 19:13:06 Commandline: apt-get remove linux-image-3.12-1-amd64 Remove: linux-image-3.12-1-amd64:amd64 (3.12.6-2), nvidia-kernel-amd64:amd64 (319.82+3.12+1), linux-image-amd64:amd64 (3.12+55), nvidia-kernel-3.12-1-amd64:amd64 (319.82+1+1+3.12.8-1) End-Date: 2014-01-30 19:13:23
I’m not going the ‘pin the package and get it from debian sid‘ here, since there are too many dependencies pulled.