Date: Thu, 29 Jul 2004 14:01:43 -0700 From: Mike Hunter <mhunter@ack.Berkeley.EDU> To: Doug White <dwhite@gumbysoft.com> Cc: freebsd-current@freebsd.org Subject: Re: panic from July 21 kernel (acpi related?) Message-ID: <20040729210143.GA5830@ack.Berkeley.EDU> In-Reply-To: <20040729104621.J63843@carver.gumbysoft.com> References: <20040726220118.GA27472@ack.Berkeley.EDU> <20040727192009.E45805@carver.gumbysoft.com> <20040729155721.GA20904@ack.Berkeley.EDU> <20040729104621.J63843@carver.gumbysoft.com>
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On Jul 29, "Doug White" wrote: > On Thu, 29 Jul 2004, Mike Hunter wrote: > > > > Is the mouse plugged into the keyboard or into the laptop directly? > > > > > > Sounds power related, like the USB ports can't handle the load and its > > > causing supply problems. > > > > Looks like you were right (nice catch)! If I boot my laptop with my > > logitech USB mouse (ums0: Logitech USB-PS/2 Optical Mouse, rev 2.00/11.10, > > addr 2, iclass 3/1 ums0: 3 buttons and Z dir.) it seems to crash with or > > without AC power hooked up. But I know for sure it's crashed with no > > mouse hooked up. And I also know for sure that it doesn't crash if I have > > the mouse *and* a USB keyboard hooked up. > > > > Thanks again for the suggestion...anything I can do to fix this? > > How many USB ports does your laptop have? It has three USB 2.0-compliant connectors and one D/Bay external media bay connector. > If it has 2, try plugging each into the machine directly. I don't know what you mean by this. When I've run with the external keyboard and mouse, I do plug in directly (I don't have a docking station.) > If that still crashes, you may have to use a > powered USB hub to drive both devices.. or find more power efficient USB > devices :) > > If your laptop can't provide full load to the USB port there isn't much > you can do directly since its a design problem with the board. It doesn't > seem like an underperforming battery or p/s since it affects both modes. I don't believe it's truly a power problem, because it works fine under windows XP and knoppix linux. I've never had it crash when plugging in a USB device, and this crash seems to happen right before it wants to give me the login prompt, so it seems like if it were truly a power issue I'd have problems in these circumstances. Let me know if there's any more info I can provide. Thanks, Mike
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