Public bug reported:
The built-in keyboard & touchpad on these machines are fully PS/2 based. At
first glance, building i8042 into the kernel proper seems sufficient:
[ 2.264540] i8042: PNP: PS/2 Controller [PNP0303:KBC,PNP0f13:PS2M] at
0x60,0x64 irq 1,12
[ 2.274233] i8042: Detected active multiplexing controller, rev 1.1
[ 2.279284] serio: i8042 KBD port at 0x60,0x64 irq 1
[ 2.280742] serio: i8042 AUX0 port at 0x60,0x64 irq 12
[ 2.282212] serio: i8042 AUX1 port at 0x60,0x64 irq 12
[ 2.283683] serio: i8042 AUX2 port at 0x60,0x64 irq 12
[ 2.285121] serio: i8042 AUX3 port at 0x60,0x64 irq 12
However, psmouse needs to be built into the initrd to get the keyboard to start
working. This is because it sits behind the touchpad on a port that will not
work until initialised:
[ 4.339219] psmouse serio2: synaptics: Touchpad model: 1, fw: 8.1, id:
0x1e2b1, caps: 0xd001a3/0x940300/0x126800, board id: 2720, fw id: 1450125
[ 4.339233] psmouse serio2: synaptics: serio: Synaptics pass-through port at
isa0060/serio2/input0
This:
CONFIG_SERIO_I8042=y
Should really be accompanied by:
CONFIG_MOUSE_PS2_SYNAPTICS=y
Having the Synaptics support as a module leaves these laptops on an
LVM2/DM-crypt password prompt with a non-working keyboard. Users can work
around it by connecting a USB keyboard to "jump start" the machine, or add
psmouse to /etc/initramfs-tools/modules .
Without disk encryption, the root filesystem will be available in time and the
Synaptics driver will initialise the keyboard well before the X login chooser
appears.
** Affects: linux-lts-saucy (Ubuntu)
Importance: Undecided
Status: New
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1314764
Title:
[Fujitsu Lifebook E744/E754] i8042 without psmouse means no keyboard
at decryption prompt
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux-lts-saucy/+bug/1314764/+subscriptions
--
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
