Hello, note the following lines from your logs:
Jan 15 10:42:23 hostname kernel: ata1.00: exception Emask 0x0 SAct 0xfff SErr
0x0 action 0x0
Jan 15 10:42:23 hostname kernel: ata1.00: irq_stat 0x4008
Jan 15 10:42:23 hostname kernel: ata1.00: failed command: READ FPDMA QUEUED
Jan 15 10:42:23
Thank you for taking the time to report this bug and helping to make
Ubuntu better. Reviewing your dmesg attachment to this bug report it
seems that there may be a problem with your hardware. I'd recommend
performing a back up and then investigating the situation. Measures you
might take
