Another user in the Ask Ubuntu thread reports, that the problem may be related to a false switch to tablet mode. I confirm the output of my device of "cat /sys/class/dmi/id/chassis_type" is "10". In addition: The E5410 is not a tablet nor a convertible, so it should not switch to tablet mode.
Another user in the Ask Ubuntu thread reports, that the problem may be related to a false switch to tablet mode. I confirm the output of my device of "cat /sys/class/ dmi/id/ chassis_ type" is "10". In addition: The E5410 is not a tablet nor a convertible, so it should not switch to tablet mode.