** Description changed:
+ [Impact]
+
+ * It should be possible to change DRM driver without rebooting.
+ * It should be possible to correctly suspend & resume, whilst preserving
driver state.
+ * This bug is for userspace/logind fixes, required to get above working.
+ * Related kernel change is
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1778658
+ *
https://github.com/torvalds/linux/commit/5775b843a619b3c93f946e2b55a208d9f0f48b59
+
+ [Test Case]
+
+ * Test and verify that on machines with Nvidia discrete graphics, one
+ can change performance/power-saving modes without rebooting.
+
+ [Regression Potential]
+
+ * There are changes to the fd handling that are passed to logind. At
+ worst, fd to the NVIDIA driver will still be held, and thus one would
+ continue to not be able to switch graphics modes without rebooting.
+
+ [Other Info]
+
+ * original bug report:
+
refer to https://github.com/systemd/systemd/issues/6908
we need that solution to make NVIDIA dGPU switching works.
impacted issue:
https://bugs.launchpad.net/somerville/+bug/1774326
** Changed in: systemd (Ubuntu Bionic)
Status: Incomplete => In Progress
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https://bugs.launchpad.net/bugs/1777099
Title:
[backport] DRM devices opened by logind stay referenced indefinitely
by PID 1
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