I got the same "can't acess tty" error, with Feisty Beta and Kubuntu, with this output:
[81.450108] ata2.00: port failed to respond (30 seconds, Status 0xd0)
[83.260473] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen
[83.260520] ata2.00: (BDMA stat 0x65)
[83.260564] ata2.00: cmd a0/01:00:00:00:00/00:00:00:00:00/a0 tag 0 cdb 0x12 d
ata 254 in
[83.752693] ata2.00: revalidation failed (errno=-5)
[118.720776] ata2.00: port failed to respond (30 seconds, Status 0xd0)
I got the same "can't acess tty" error, with Feisty Beta and Kubuntu, with this output:
[81.450108] ata2.00: port failed to respond (30 seconds, Status 0xd0) 00:00:00/ 00:00:00: 00:00/a0 tag 0 cdb 0x12 d
[83.260473] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen
[83.260520] ata2.00: (BDMA stat 0x65)
[83.260564] ata2.00: cmd a0/01:00:
ata 254 in
[83.752693] ata2.00: revalidation failed (errno=-5)
[118.720776] ata2.00: port failed to respond (30 seconds, Status 0xd0)
lspci output is attached
And I agree, this is a serious issue!