I think that the bug reported initially in this thread is caused by the ehci_hcd module.
The other bug that I mentioned seams to be different from the one mentioned by Fabian Neumann. I do not see a black screen after resume but a white screen where the mouse pointer is correctly displayed and can be moved. However, the screen is otherwise completely white and no password dialog is displayed. I can then enter the password blindly and after that the desktop is shown correctly. As the mouse pointer is shown correctly on the white screen I am not sure that this bug is related to the nvidia driver. Perhaps there is a problem with the initialization of X.
I think that the bug reported initially in this thread is caused by the ehci_hcd module.
The other bug that I mentioned seams to be different from the one mentioned by Fabian Neumann. I do not see a black screen after resume but a white screen where the mouse pointer is correctly displayed and can be moved. However, the screen is otherwise completely white and no password dialog is displayed. I can then enter the password blindly and after that the desktop is shown correctly. As the mouse pointer is shown correctly on the white screen I am not sure that this bug is related to the nvidia driver. Perhaps there is a problem with the initialization of X.