** Attachment added: "a bit more of the log" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1574178/+attachment/4645004/+files/dropping.jpg
-- 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/1574178 Title: 4.4.0-21 "gave up waiting for root device" Status in linux package in Ubuntu: Incomplete Bug description: On a Lenovo A740, after upgrading to Xenial I have to downgrade to kernel 4.2.0-35 in order to be able to boot at all. My current /etc/default/grub: # If you change this file, run 'update-grub' afterwards to update # /boot/grub/grub.cfg. # For full documentation of the options in this file, see: # info -f grub -n 'Simple configuration' #GRUB_DEFAULT=0 #KBU: 4.4.0 doesn't find root :((( GRUB_DEFAULT="Advanced options for Ubuntu>Ubuntu, with Linux 4.2.0-35-generic" #GRUB_HIDDEN_TIMEOUT=0 GRUB_HIDDEN_TIMEOUT_QUIET=true GRUB_TIMEOUT=5 GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian` #GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" GRUB_CMDLINE_LINUX_DEFAULT="" GRUB_CMDLINE_LINUX="noprompt persistent" # Uncomment to enable BadRAM filtering, modify to suit your needs # This works with Linux (no patch required) and with any kernel that obtains # the memory map information from GRUB (GNU Mach, kernel of FreeBSD ...) #GRUB_BADRAM="0x01234567,0xfefefefe,0x89abcdef,0xefefefef" # Uncomment to disable graphical terminal (grub-pc only) #GRUB_TERMINAL=console # The resolution used on graphical terminal # note that you can use only modes which your graphic card supports via VBE # you can see them in real GRUB with the command `vbeinfo' #GRUB_GFXMODE=640x480 # Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux #GRUB_DISABLE_LINUX_UUID=true # Uncomment to disable generation of recovery mode menu entries #GRUB_DISABLE_RECOVERY="true" # Uncomment to get a beep at grub start #GRUB_INIT_TUNE="480 440 1" This is the same system as https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1463422 See attached image for what the screen looks like when trying to boot 4.4. My USB keyboard also stops working there so I can't actually type anything into the busybox. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1574178/+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
