Re: [2.6.x] USB Zip drive kills ps2 mouse.

["Randy.Dunlap" <rddunlap@osdl.org>]

| Randy.Dunlap wrote:
| > | From: walt
| > | To: Linux Kernel <linux-kernel@vger.kernel.org>
| > | Subject: [2.6.x]  USB Zip drive kills ps2 mouse.
| > | 
| > | 
| > | Could I ask anyone with a USB Zip drive and a ps2 mouse to try
| > | to confirm this bizarre bug for me?
| > | 
| > | To reproduce it should be simple:
| > | 
| > | 1)  Compile USB support as modular, *not* compiled in.
| > | 
| > | 2)  The USB Zip drive *must* be plugged in during boot.
| > |      This bug won't show if you plug in the drive later.
| > | 
| > | 3)  Reboot and see if your ps2 mouse works.
| > 
| > Hi,
| > 
| > I'm not seeing a problem with this.  I'm using 2.6.4-rc1.
| > 
| > However, you didn't mention what modules were being loaded
| > automatically, so we could have a difference in that area.
| > If you care to specify a module list, I can test it again.
| > 
| > And is your USB Zip drive on a UHCI or OHCI controller?
| > I have both, so I can test it either way.
| 
| I've narrowed it down to the uhci_hcd module -- all the rest can
| be compiled in or as modules, doesn't matter.
| 
| Just in case I was vague:  the Zip drive works great regardless --
| it's only the ps2 mouse which is affected by this weird problem.
| No cursor movement at all if the Zip is plugged in during boot.
| 
| ASUS A7V8X mobo, in case it matters:
| 00:10.0 USB Controller: VIA Technologies, Inc. VT6202 [USB 2.0 controller] (rev 80)
| 00:10.1 USB Controller: VIA Technologies, Inc. VT6202 [USB 2.0 controller] (rev 80)
| 00:10.2 USB Controller: VIA Technologies, Inc. VT6202 [USB 2.0 controller] (rev 80)
| 00:10.3 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 82)
| 
| Things that make no difference to this problem:  ACPI, PnP, udev versus devfs.
| I'm also using 2.6.4-rc1.  I have not tested for this bug on any 2.6.x prior
| to a week ago, but I have tried recent 2.4.x kernels and I do not see this bug
| with them.

Is VIA (still) UHCI for USB 1.1?
Maybe it's a VIA UHCI controller problem.

I suggest taking it up on <linux-usb-devel@lists.sf.net>.

--
~Randy