[9fans] jumpy usb mouse on 9pi

[9fans] jumpy usb mouse on 9pi

[Paul Ivanov]

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Hello 9fans,

I just got a used 3 button USB mouse (IBM-M-U35) which is giving me grief
on a fresh 9pi image (board rev 0xe firmware rev: 1427481988). The mouse
works fine plugged into Debian and OS X machines, but on 9pi, moving the
mouse causes the cursor to jump erratically around the screen, almost
exclusively in the vertical direction, along with rio registering button
presses even though I'm not pressing any.

Has anyone run into something similar? What can I do to try to address this?

best,
--
Paul Ivanov
http://pirsquared.org | GPG/PGP key id: 0x0F3E28F7

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Re: [9fans] jumpy usb mouse on 9pi

[steve]

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I have the same firmware, and an ibm m-u0013-o 3 button mouse, on a pi2 and it's working fine.

I will try my pi1 tonight if I get time.

Steve



> On 6 May 2015, at 00:34, Paul Ivanov <pi@berkeley.edu> wrote:
> 
> Hello 9fans,
> 
> I just got a used 3 button USB mouse (IBM-M-U35) which is giving me grief on a fresh 9pi image (board rev 0xe firmware rev: 1427481988). The mouse works fine plugged into Debian and OS X machines, but on 9pi, moving the mouse causes the cursor to jump erratically around the screen, almost exclusively in the vertical direction, along with rio registering button presses even though I'm not pressing any.
> 
> Has anyone run into something similar? What can I do to try to address this?
> 
> best,
> -- 
> Paul Ivanov
> http://pirsquared.org | GPG/PGP key id: 0x0F3E28F7

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Re: [9fans] jumpy usb mouse on 9pi

[Aram Hăvărneanu]

This happens to me sporadically on ThinkPad T400. I can fix it by rebooting.

-- 
Aram Hăvărneanu

Re: [9fans] jumpy usb mouse on 9pi

[Richard Miller]

> moving the
> mouse causes the cursor to jump erratically around the screen, almost
> exclusively in the vertical direction, along with rio registering button
> presses even though I'm not pressing any.

This happens when the usb keyboard/mouse driver misinterprets the HID
protocol description in the device configuration.  Incidentally this
is not specific to 9pi -- Plan 9 uses the same usb device drivers on
all platforms.

Try forcing the mouse to use the simpler boot protocol, by appending
'kbargs=-b' to the command line in cmdline.txt (on dos partition).