CAPS LOCK led doesn't work with dumbkbd because dumbkbd option disables
the i8042 module write capability, so the i8042 can't write the led
status to the keyboard controller. Unfortunately this is a side effect
of dumbkbd option, but there can be others too. I digged a bit into
kernel source code
Did you mean i8042.dumbkbd instead of i8042.direct?
To me it happens that i8042.direct causes no apparent side effects, and the
sporious events are triggered once after pressing CAPS LOCK or NUM LOCK;
i8042.dumbkbd instead causes the CAPS LOCK keyboard led not to blink (and this
is expected),
This is GREAT news! We have a hint to start with.
i8042.c linux kernel source code defines more module parameters. The module
parameter "direct" disables the scan code translation, but the module parameter
"dumbkbd" completely disables the write capability of the kernel module to the
i8042
I just discovered that NumLock and CapsLock keys restore the spourious
input events
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Title:
SHIFT, ALT and CTRL problem with HP
Can't confirm because I'm not playing games with Linux.
Anyway I can confirm that pressing and keeping pressed the LEFT SHIFT key for
at least 2 seconds, the glitch seems to disappear for a short period of time
(minutes) and the spurious EV_MSC events stops.
I used evtest utility to monitor
Correction: what I said was a reserved event is actually an EV_SYN
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Title:
SHIFT, ALT and CTRL problem with HP pavilion 15 ab062nl
I saved a dump of some seconds of the raw keyboard events doing:
cat /dev/input/event3 > /tmp/dump.bin
the result file can be downloaded from http://92.222.39.93/paolo/dump.bin (1.7
kb)
According to the kernel page at
https://www.kernel.org/doc/Documentation/input/input.txt (see Event
I can confirm the same problem with the same machine, HP 15 ab062nl. The
problem seems to be kernel related because running ubuntu in rescue mode
(pure root shell) still acts the same way
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