You have been subscribed to a public bug:
Ubuntu 21.10 can NOT enter desktop after:
1) install Nvidia 470
2) blacklist nouveau driver
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why blacklist nouveau?
External HDMI monitor render 0.5 frames/second when turn off built-in
monitor. Render normally if both build-in and external HDMI monitor are
on.
Blacklisting nouveau fix `0.5 frames/s` problem in Ubuntu 21.04, but
cannot enter desktop in Ubuntu 21.10
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why not use Ubuntu 21.04 ?
Ubuntu 21.04 render incorrectly, for example, if:
1) built-in monitor: scale=125%, resolution=4000x2000
2) external monitor: scale=100%, resulution=2000x1000
Ubuntu 21.10 render correctly.
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$ lspci
00:00.0 Host bridge: Intel Corporation Device 9b44 (rev 02)
00:02.0 VGA compatible controller: Intel Corporation UHD Graphics (rev 05)
01:00.0 VGA compatible controller: NVIDIA Corporation Device 1f99 (rev a1)
00:04.0 Signal processing controller: Intel Corporation Xeon E3-1200 v5/E3-1500
v5/6th Gen Core Processor Thermal Subsystem (rev 02)
...
** Affects: xorg (Ubuntu)
Importance: Undecided
Status: New
** Tags: bot-comment
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21.10 cannot enter desktop after blacklist nouveau driver
https://bugs.launchpad.net/bugs/1955965
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