2.5.40: AT keyboard input problem

[Tobias Ringstrom]

While 2.5 has worked better than I hoped for so far, I do have a problem 
with the new input layer (I think) that is easily reproducible, and quite 
irritating.

If I press and hold my left Alt key, press and release the right AltGr
key, and then release the left Alt key, I get one of the following
messages in dmesg:

atkbd.c: Unknown key (set 2, scancode 0x1b8, on isa0060/serio0) pressed.
atkbd.c: Unknown key (set 2, scancode 0x1b8, on isa0060/serio0) pressed.
atkbd.c: Unknown key (set 2, scancode 0xb8, on isa0060/serio0) pressed.
atkbd.c: Unknown key (set 2, scancode 0xb8, on isa0060/serio0) pressed.
atkbd.c: Unknown key (set 2, scancode 0xb8, on isa0060/serio0) pressed.
atkbd.c: Unknown key (set 2, scancode 0xb8, on isa0060/serio0) pressed.
atkbd.c: Unknown key (set 2, scancode 0xb8, on isa0060/serio0) pressed.
atkbd.c: Unknown key (set 2, scancode 0x1b8, on isa0060/serio0) pressed.
atkbd.c: Unknown key (set 2, scancode 0xb8, on isa0060/serio0) pressed.
atkbd.c: Unknown key (set 2, scancode 0xb8, on isa0060/serio0) pressed.
atkbd.c: Unknown key (set 2, scancode 0x1b8, on isa0060/serio0) pressed.
atkbd.c: Unknown key (set 2, scancode 0x1b8, on isa0060/serio0) pressed.
atkbd.c: Unknown key (set 2, scancode 0xb8, on isa0060/serio0) pressed.
atkbd.c: Unknown key (set 2, scancode 0xb8, on isa0060/serio0) pressed.
atkbd.c: Unknown key (set 2, scancode 0x1b8, on isa0060/serio0) pressed.
atkbd.c: Unknown key (set 2, scancode 0x9d, on isa0060/serio0) pressed.
atkbd.c: Unknown key (set 2, scancode 0x9d, on isa0060/serio0) pressed.

The left Alt key is now stuck until I press and release it again.

The same thing happens for a few other combinations as well. I happens 
both in X and in the console.

Please let me know if you need more info.

/Tobias