** Description changed: + SRU Request + + While bbswitch may fail on some hybrid systems (e.g. on the desktop or + when the bbswitch module fails to build), this is not a good reason to + prevent the system from offloading rendering to the NVIDIA GPU. + + [Impact] + * This problem makes it impossible to use the NVIDIA GPU on hybrid systems with Intel+NVIDIA GPUs when bbswitch is not available (i.e. when it fails to load). + + [Test Case] + * Make sure to be using a hybrid system with Intel+NVIDIA GPUs. + + * Check that bbswitch is not available. You can do so by posting output of the following command: + test -e /proc/acpi/bbswitch && echo true || echo false + + * Make sure that the gpu-manager is not disabled (only necessary if you disabled it manually). + + * Install ubuntu-drivers-common from trusty-proposed. + + * Remove all fglrx and nvidia drivers (keep the nvidia-common and the nvidia-prime packages): + sudo apt-get --purge remove nvidia-331 + sudo apt-get --purge remove nvidia-331 + sudo apt-get --purge remove fglrx + sudo apt-get --purge remove fglrx-updates + + * Restart the system. + + * Install the nvidia binary driver, reboot, and check that the binary driver is enabled (attach your /var/log/gpu-manager.log) + - Expected: the NVIDIA discrete GPU is enabled. + - Bad behavior: the system switches back to the intel driver and the discrete GPU is not used, despite the fact that the system was configured properly. + + [Regression Potential] + * Low. Systems that currently work will keep working as usual, the ones that currently fail should finally work. + + [Other Info] + * N/A + + ----------- + The gpu-manager should allow RandR offloading without bbswitch. This would allow desktop systems to make use of offloading even when bbswitch is not supported. Also, nvidia-settings should not complain in such scenarios. See https://bugs.launchpad.net/ubuntu/+source/ubuntu-drivers- common/+bug/1310023/comments/70
-- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to nvidia-settings in Ubuntu. https://bugs.launchpad.net/bugs/1349282 Title: The gpu-manager should allow RandR offloading without bbswitch To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-settings/+bug/1349282/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
