Date: Sat, 06 Jan 2001 14:12:24 -0800 (PST) From: John Polstra <jdp@polstra.com> To: hackers@freebsd.org Subject: KVM switch vs. FreeBSD psm driver Message-ID: <XFMail.010106141224.jdp@polstra.com>
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I realize this is a well-known problem. Although there's much
discussion about it in the mailing list archives, I couldn't find an
actual solution.
I've got a Belkin OmniView Pro 8-Port KVM switch which thinks it's
much smarter than it really is. When I try to use the mouse through
it with FreeBSD (-current from around Christmas, but I also had
problems with -stable) it doesn't work right at all. It's got the
same symptoms everybody else has reported: the cursor jumps around,
and lots of "psmintr: out of sync" messages get logged.
I found a posting in -hackers where Kazutaka YOKOTA
<yokota@zodiac.mech.utsunomiya-u.ac.jp> said:
> You can force FreeBSD to use the mouse as the standard PS/2 mouse by
> specifying the flags 0x200 to the psm driver. This way, the mouse
> should always work. But, you cannot use the wheel.
However, setting that flag hasn't helped me at all. Here are the
relevant parts of "/var/run/dmesg.boot" from a verbose boot-up:
psm0: current command byte:0047
psm0: <PS/2 Mouse> flags 0x200 irq 12 on atkbdc0
psm0: model Generic PS/2 mouse, device ID 255-ffffffff, 2 buttons
psm0: config:00000200, flags:00000000, packet size:3
psm0: syncmask:c0, syncbits:00
The mouse itself is a no-name 2-button PS/2 mouse. It doesn't have a
wheel or anything else "extra". It works fine when connected directly
to the computer.
I have also tried various combinations of flags 0x100 (NOCHECKSYNC)
and 0x400 (NORESET) without any luck.
The useless mouse behavior happens with moused and with XFree86 + no
moused. It happens whether I specify the protocol as "ps/2" or as
"auto".
The KVM switch claims to have "Microsoft Intellimouse support and
emulation." However, in the troubleshooting section of its manual it
says you should make sure your driver is "either for a Standard PS/2
or Microsoft-compatible PS/2" mouse."
I don't care about wheels, and I'm even willing to get by with only 2
buttons. I don't mind hacking up the psm driver if necessary. I just
want the mouse to work with this switch.
Any suggestions?
John
--
John Polstra jdp@polstra.com
John D. Polstra & Co., Inc. Seattle, Washington USA
"Disappointment is a good sign of basic intelligence." -- Chögyam Trungpa
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