Bug 205319

Summary: 'gpu has fallen off the bus' after return from suspend on Lenovo W540 / Nvidia Quadro K2100M
Product: Drivers Reporter: Wojciech Wieckowski (xplwowi)
Component: PCIAssignee: drivers_pci (drivers_pci)
Status: NEW ---    
Severity: normal CC: jonathon.padfield, kai.heng.feng, xplwowi
Priority: P1    
Hardware: All   
OS: Linux   
Kernel Version: 5.3.0-19-generic Subsystem:
Regression: No Bisected commit-id:
Attachments: nvidia 0000:01:00.0: Refused to change power state, currently in D3

Description Wojciech Wieckowski 2019-10-26 01:49:49 UTC 
Created attachment 285653 [details]
nvidia 0000:01:00.0: Refused to change power state, currently in D3

Hello,
I was asked to report this bug here to involve kernel developers in recognizing problem that appeared recently on my Kubuntu laptop in the following circumstances:
Kernel was updated to 5.3.0-19,
Nvidia proprietary driver was updated to 435.21.
Nvidia DKMS driver was patched by ubuntu maintainers by removing call of pci_save_state() on switching to S3 state. Without this patch return from suspend works OK.
Kernel / Nvidia packages are from official (K)ubuntu repository.
Correction attempts and some other details can be found here: 
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1847937