After most recent kernel update (4.15.0-44-generic) my tablet freezes whenever plugged into docking station
Solution 1
This problem has been solved in 4.15.0-45-generic. Running these commands can fix the issue:
sudo apt-get update
sudo apt-get dist-upgrade
Solution 2
Same story here, using a XPS 15 99560 and a TB16 dock.
The only solution found for now is to revert to 4.15.0-43, using the Advanced boot options in GRUB.
Link to the kernel changelog. Link to the launchpad discussion where you can follow the evolution.
EDIT : fixed in 4.15.0-45
* External monitors does not work anymore 4.15.0-44 (LP: #1813663)
- SAUCE: Revert "drm/i915/dp: Send DPCD ON for MST before phy_up"
Solution 3
This kinda happens also to me, with my Surface Pro 3, when I boot it attached to the docking station.
I can boot the device, but as soon as I log in, I get a kernel bug NULL pointer deference error. Which turns the display black and locks up all input. Network is still working though.
If I boot the device and login without docking station, it works. I can attach the docking station afterwards.
I've reported my issue here: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1813796
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Maniacal Science
I'm a professor of mathematics at the University of Victoria, in Canada.
Updated on September 18, 2022Comments
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Maniacal Science over 1 year
I performed the most recent kernel update on my Dell 5290 2-in-1 earlier today. But moments after I plug it into its docking station, the screen flickers, blanks and freezes. The only item left on the screen is the mouse pointer, and it is stuck.
If I leave the tablet not plugged in, it runs just fine. It seems to be the docking station that triggers the freeze.
That said, I can log into the tablet via ssh even with the screen frozen. So the system is still running. But if I try to reboot the tablet via the
reboot
command, nothing appears to happen.sudo reboot -f
will reboot the system, whilesudo reboot
will not.Any ideas where I should start looking to identify this problem?
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Kristopher Ives about 5 yearsWhat happens if you hold Shift while booting and within GRUB select the old kernel from before you updated?
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Maniacal Science about 5 yearsIt took me a while, but I finally got it to boot to 4.15.0-43-generic. This kernel is not freezing. I'll run it all night to be sure, but it's survived much longer than 4.15.0-44-generic has ever lasted on my tablet.
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Maniacal Science about 5 yearsI've escalated the question to a bug report: bugs.launchpad.net/ubuntu/+source/linux/+bug/1813795
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Maniacal Science about 5 yearsAlthough it's possibly unrelated, I've been having problems with my desktop computer and this new kernel, as well. Getting strange wifi cut-outs. It's telling me my printer isn't accepting jobs. And it's starting to refuse basic file operations -- getting errors with the copy operation.
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Gondy about 5 yearsI confirm GRUB -> Advanced options -> booting with kernel 4.15.0.-43 got things back to work as before.
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desmond13 about 5 yearsI still have this problem with kernel version is 4.15.0-46-generic on ubuntu 16.04 Link to my question is: askubuntu.com/questions/1125107/…