Thanks Jackson, for help on replacing the kernel . My c720 now works perfect using: - kernel 3.17 rc 5 (supports c720 touchpad). - plus the adapted GRUB_CMDLINE_LINUX_DEFAULT="tpm_tis.force=1" in /etc/default/grub (no more boot delay).
Now I am looking for an easy way to 'lock the kernel', to prevent software updates from overwriting the fixes... (Already found one cryptic command line trick that works, in which I try to understand 3 nested " | " commands ... ). king greetings to all -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1308264 Title: Ubuntu 14.04 Beta 2 stuck at "Switched to clocksource tsc" when booting up, then resumes booting to the login screen, after 1 minute Status in “linux” package in Ubuntu: Confirmed Bug description: On Ubuntu 14.04 Beta 2 (Final Beta), it takes remarkebly long to boot up into Ubuntu. Ubuntu gets stuck at "Switched to clocksource tsc" for a almost 1 minute or longer, then it resumes booting up to the login screen. On Ubuntu 13.10 it only takes about 7 seconds to get to the login screen, while it takes almost more than a minute to get on the login screen on Ubuntu 14.04 Beta 2. I hope this issue could be fixed. I have the Acer C720 (chromebook) that has been enabled to use legacy boot so I can use other OS's. Other Acer C720 users have been faceing the same problem also. Video of Boot https://www.youtube.com/watch?v=PVkFTsEzS80 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1308264/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp