** Description changed: + SRU Request: + + [Impact] + When power saving mode is enabled, the initramfs will not be update, thus leading to a potential API mismatch between kernelspace and userspace. + + [Test Case] + + 1) Make sure the nvidia packages are installed, and enable power saving mode: + sudo prime-select intel + + 2) Enable the -proposed repository, and install the new "nvidia-384" + + 3) Check that the initramfs is updated. + + 3) Restart your computer and see if the driver works correctly (you + should be able to access the desktop session) + + [Regression Potential] + Low, as updating the initramfs is always the (intended) default behaviour. + _______________________________ + Note: without fix be landed , nvidia driver online update could be failed. nvidia-375.postinst not always build initramfs by default: " ALTERNATIVE=$(readlink /etc/alternatives/x86_64-linux-gnu_gl_conf) if [ "$ALTERNATIVE" = "/usr/lib/nvidia-375/ld.so.conf" ]; then # Update initramfs so that the blacklist ends up in the initramfs if [ -x /usr/sbin/update-initramfs ]; then /usr/sbin/update-initramfs -u " it the case of user who are using intel then update driver from nvidia-375.20 to nvidia-375.82 will get screen dark after prime-select nvidia later. syslog: " NVRM: loading NVIDIA UNIX x86_64 Kernel Module 375.20 Tue Nov 15 16:49:10 PST 2016 (using threaded interrupts) ...... NVRM: API mismatch: the client has the version 375.82, but NVRM: this kernel module has the version 375.20. Please NVRM: make sure that this kernel module and all NVIDIA driver NVRM: components have the same version. " The root cause is the nvidia kernel module in initramfs not be updated in this case. impacted issues: LP: #1653592
** Description changed: SRU Request: [Impact] When power saving mode is enabled, the initramfs will not be update, thus leading to a potential API mismatch between kernelspace and userspace. [Test Case] 1) Make sure the nvidia packages are installed, and enable power saving mode: sudo prime-select intel 2) Enable the -proposed repository, and install the new "nvidia-384" 3) Check that the initramfs is updated. - 3) Restart your computer and see if the driver works correctly (you + 4) Restart your computer and see if the driver works correctly (you should be able to access the desktop session) [Regression Potential] Low, as updating the initramfs is always the (intended) default behaviour. _______________________________ Note: without fix be landed , nvidia driver online update could be failed. nvidia-375.postinst not always build initramfs by default: " ALTERNATIVE=$(readlink /etc/alternatives/x86_64-linux-gnu_gl_conf) if [ "$ALTERNATIVE" = "/usr/lib/nvidia-375/ld.so.conf" ]; then # Update initramfs so that the blacklist ends up in the initramfs if [ -x /usr/sbin/update-initramfs ]; then /usr/sbin/update-initramfs -u " it the case of user who are using intel then update driver from nvidia-375.20 to nvidia-375.82 will get screen dark after prime-select nvidia later. syslog: " NVRM: loading NVIDIA UNIX x86_64 Kernel Module 375.20 Tue Nov 15 16:49:10 PST 2016 (using threaded interrupts) ...... NVRM: API mismatch: the client has the version 375.82, but NVRM: this kernel module has the version 375.20. Please NVRM: make sure that this kernel module and all NVIDIA driver NVRM: components have the same version. " The root cause is the nvidia kernel module in initramfs not be updated in this case. impacted issues: LP: #1653592 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1717151 Title: driver installation might not build initramfs then cause dark screen after switching to nvidia To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1717151/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
