Messages in this thread | ![/](/images/icornerl.gif) | | Date | Sat, 26 Jul 2003 11:36:19 +0200 | From | Andries Brouwer <> | Subject | Re: i8042 problem |
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On Sat, Jul 26, 2003 at 02:11:36AM -0400, Pete Zaitcev wrote:
> On my old laptop, i8042 refuses to work with 2.6.0-test1-bk2. > After a reboot, keyboard is dead. Hooking external keyboard > revives the internal keyboard. Here's the dmesg with DEBUG: > > drivers/input/serio/i8042.c: 60 -> i8042 (command) [50] > drivers/input/serio/i8042.c: 44 -> i8042 (parameter) [50] > drivers/input/serio/i8042.c: fa <- i8042 (interrupt, kbd, 1) [51] > serio: i8042 KBD port at 0x60,0x64 irq 1 > <------------- This is it, keyboard is dead.
Writing 44 to the command byte disables IRQ1. (Otherwise the only remarkable part was that no reaction came to f2 - identify keyboard.)
> V---- Trying to hook external keyboard now > drivers/input/serio/i8042.c: f0 -> i8042 (kbd-data) [109846] > drivers/input/serio/i8042.c: fa <- i8042 (interrupt, kbd, 1) [109852] > drivers/input/serio/i8042.c: 00 -> i8042 (kbd-data) [109873] > drivers/input/serio/i8042.c: fa <- i8042 (interrupt, kbd, 1) [109879] > drivers/input/serio/i8042.c: 41 <- i8042 (interrupt, kbd, 1) [109900] > drivers/input/serio/i8042.c: 41 <- i8042 (interrupt, kbd, 1) [109921] > atkbd.c: Unknown key (set 0, scancode 0x2, on isa0060/serio0) pressed. > input: AT Set 2 keyboard on isa0060/serio0 > <----- Now we are talking!
Funny. Looks like the "read scancode set" command got the scancode set twice, and the second time was seen as unknown key.
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