Messages in this thread | | | Date | Thu, 18 Sep 2003 19:37:27 +0200 | From | Herbert Poetzl <> | Subject | Re: Keyboard problems: magic key + h stuck, and keyboard errors,stuck keys with 2.6.0-test5-bk3 |
| |
On Mon, Sep 15, 2003 at 02:12:21AM -0400, Shawn Starr wrote: > I have two systems, When I turn the system next to me on the machine thats > currently powered on spews out this each time, why is the magic key > (alt+sysrq h) being dumped? > > They are both connected via serial.
on a serial line, a break is ALT-SYSRQ, maybe some process is restarted and then outputs some characters, including a 'h' ...
HTH, Herbert
> SysRq : HELP : loglevel0-8 reBoot Dumpmsgs tErm kIll saK showMem powerOff > showPc unRaw Sync showTasks Unmount > SysRq : HELP : loglevel0-8 reBoot Dumpmsgs tErm kIll saK showMem powerOff > showPc unRaw Sync showTasks Unmount > SysRq : HELP : loglevel0-8 reBoot Dumpmsgs tErm kIll saK showMem powerOff > showPc unRaw Sync showTasks Unmount > SysRq : HELP : loglevel0-8 reBoot Dumpmsgs tErm kIll saK showMem powerOff > showPc unRaw Sync showTasks Unmount > SysRq : HELP : loglevel0-8 reBoot Dumpmsgs tErm kIll saK showMem powerOff > showPc unRaw Sync showTasks Unmount > SysRq : HELP : loglevel0-8 reBoot Dumpmsgs tErm kIll saK showMem powerOff > showPc unRaw Sync showTasks Unmount > SysRq : HELP : loglevel0-8 reBoot Dumpmsgs tErm kIll saK showMem powerOff > showPc unRaw Sync showTasks Unmount > > I have run into race conditions with the two machines and serial > connectivity in the past (see previous emails on that). > > What would be the best way to determine why my systems cause so much > problems wrt to serial connectivity? > > Also, what is the best way to debug a kernel over serial when the system > on the other end is completely locked? > > The other issue is: > > Dec 8 17:56:45 coredump kernel: atkbd.c: Unknown key (set 2, scancode 0xb8, on isa0060/serio0) pressed. > Dec 8 17:56:45 coredump kernel: atkbd.c: Unknown key (set 2, scancode 0x9d, on isa0060/serio0) pressed. > Feb 12 23:25:29 coredump kernel: atkbd.c: Unknown key (set 2, scancode 0xae, on isa0060/serio0) pressed. > Feb 17 02:09:26 coredump kernel: atkbd.c: Unknown key (set 2, scancode 0xb8, on isa0060/serio0) pressed. > Feb 20 23:06:04 coredump kernel: atkbd.c: Unknown key (set 2, scancode 0x9d, on isa0060/serio0) pressed.Feb 22 01:45:55 coredump kernel: atkbd.c: Unknown key (set 2, scancode 0x9d, on isa0060/serio0) pressed. > Feb 24 18:33:37 coredump kernel: atkbd.c: Unknown key (set 2, scancode 0xa0, on isa0060/serio0) pressed. > Feb 27 00:09:52 coredump kernel: atkbd.c: Unknown key (set 2, scancode 0x9d, on isa0060/serio0) pressed. > Mar 5 00:49:59 coredump kernel: atkbd.c: Unknown key (set 2, scancode 0xb8, on isa0060/serio0) pressed. > Mar 5 00:49:59 coredump kernel: atkbd.c: Unknown key (set 2, scancode 0x9d, on isa0060/serio0) pressed. > .......................... > > Sep 1 23:38:58 coredump kernel: atkbd.c: Unknown key (set 2, scancode 0xc0, on isa0060/serio0) pressed. > Sep 1 23:38:59 coredump kernel: atkbd.c: Unknown key (set 2, scancode 0x9d, on isa0060/serio0) pressed. > Sep 1 23:39:04 coredump kernel: atkbd.c: Unknown key (set 2, scancode 0xc0, on isa0060/serio0) pressed. > Sep 1 23:39:35 coredump kernel: atkbd.c: Unknown key (set 2, scancode 0x9d, on isa0060/serio0) pressed. > Sep 10 20:25:57 coredump kernel: atkbd.c: Unknown key (set 2, scancode 0xa0, on isa0060/serio0) pressed. > Sep 10 21:50:22 coredump kernel: atkbd.c: Unknown key (set 2, scancode 0x9d, on isa0060/serio0) pressed. > Sep 11 22:57:07 coredump kernel: atkbd.c: Unknown key (set 2, scancode 0x9d, on isa0060/serio0) pressed. > Sep 13 16:16:24 coredump kernel: atkbd.c: Unknown key (set 2, scancode 0x9c, on isa0060/serio0) pressed. > > I have a small 4 port KVM switch from Startech, Is this KVM causing > keyboard issues that the keyboard driver cannot interpret properly? > > Why is this occuring so often? I can usually trigger this if I start using > certain key combinations. > > What also happens is a key will get 'stuck' and then repeat itself until I > stop it from repeating the letter. > > The keyboard is a Microsoft Internet keyboard PS/2 style plugged into the > KVM. > > If you want me to catch any debug output let me know and I will do this. > > Thanks, > > Shawn S. > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |