[Bug 253249] USB keyboard: repeated and out of order characters
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Thu Feb 4 15:13:38 UTC 2021
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=253249
Bug ID: 253249
Summary: USB keyboard: repeated and out of order characters
Product: Base System
Version: 12.2-RELEASE
Hardware: Any
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: usb
Assignee: usb at FreeBSD.org
Reporter: janm at transactionware.com
Created attachment 222162
--> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=222162&action=edit
usbdump output when the problem is seen.
When typing quickly on a USB keyboard, some characters are repeated and some
appear out of order.
Attached is the output of usbdump and the console messages with
hw.usb.ukbd.debug=2 when typing "m_count" quickly. The characters presented are
"m_counntu".
Three different keyboards tested: Two from Unicomp and a Dell keyboard. The
Dell keyboard does slightly better but the problem still exists. I do not see
the problem when using the same keyboards on a Macintosh.
This appears to be similar to the problem here:
https://forums.freebsd.org/threads/mac-keyboard-weirdness-freebsd-12-2.77728/
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