I recently installed Ubuntu 18.04 alongside Windows 10 on my HP Spectre x360 13t. After installation, when I turn on the laptop, its always stuck on the purple GNU Grub 2.02 screen with a frozen countdown timer. I can't choose which OS to boot into, everything is just stuck. The only way I could choose which OS to boot into is by manually going into the BIOS every time I turn on the PC and choose a boot loader. Performing Grub repair from Ubuntu doesn't seem to help. Did anyone ever face a similar problem?
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Grub freezes when logitech unifying receiver plugged in
This seems to be the problem. Without the dongle plugged in, it works totally fine.
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The only way I could choose which OS to boot into is by manually going into the BIOS every time I turn on the PC and choose a boot loader.
Does the Grub window appear and work properly if you do this? If so, it seems that changing the boot device in the BIOS would do the trick.
If that's not the case and Grub does not show up, but instead you are booted directly into Windows or Ubuntu. Then edit the file /boot/grub/grub.cfg and remove quiet and splash from GRUB_CMDLINE_LINUX_DEFAULT = "quiet splash". Leave the quotes and remember to change it back after everything is solved. Now reboot normally.
Disabling quiet causes the kernel to print errors, warnings and general information.
Disabling splash, disables the Ubuntu loading screen and displays system processes/warnings/errors instead. This should provide more information on what is happening.
Dennis
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