Bug#852698: linux-image-4.9.0-1-amd64: nouveau seems to hang programs like lspci and Xorg
Same here, optimus graphics with NVIDIA GT650M and intel graphics. Up to kernel version 4.8 the graphics is working fine. With kernel 4.9.2 X hangs. Also „lspci“ hangs.
Starting in text mode (sudo systemctl set-default multi-user.target) I can issue lspci:
01:00.0 VGA compatible controller: NVIDIA Corporation GK107M [GeForce GT 650M] (rev a1) (prog-if 00 [VGA controller])
Subsystem: Dell GK107M [GeForce GT 650M]
Flags: bus master, fast devsel, latency 0, IRQ 31
Memory at f0000000 (32-bit, non-prefetchable) [size=16M]
Memory at c0000000 (64-bit, prefetchable) [size=256M]
Memory at d0000000 (64-bit, prefetchable) [size=32M]
I/O ports at 3000 [size=128]
Expansion ROM at <ignored> [disabled]
Capabilities: [60] Power Management version 3
Capabilities: [68] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [78] Express Endpoint, MSI 00
Capabilities: [b4] Vendor Specific Information: Len=14 <?>
Capabilities: [100] Virtual Channel
Capabilities: [128] Power Budgeting <?>
Capabilities: [600] Vendor Specific Information: ID=0001 Rev=1 Len=024 <?>
Capabilities: [900] #19
Kernel driver in use: nouveau
Kernel modules: nouveau
Workaround is to blacklist nouveau.
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