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Date: Sun, 30 Mar 2008 17:09:07 -0400 From: Mark Lord <lkml@....ca> To: Pavel Machek <pavel@...e.cz> Cc: Linux Kernel <linux-kernel@...r.kernel.org>, Greg KH <gregkh@...e.de>, Andrew Morton <akpm@...ux-foundation.org>, jikos@...e.cz Subject: Re: 2.6.25-rc7: Ugh. Mark Lord wrote: > Pavel Machek wrote: >> Hi! >> >>>> It is with great reluctance when I attempt moving my main "desktop" >>>> over to a new kernel version -- because the USB subsystem seems to >>>> break every single time. >>>> >>>> So today I tried 2.6.25-rc7 on it for the first time. >>>> Not good. >>>> >>>> It boots, but just a simple suspend/resume (RAM) was enough to kill it. >>>> It comes back on resume, with an X desktop again, >>>> but with no USB functionality -- no mouse. >>>> >>>> The keyboard still works, so I dropped to a console and tried: >>>> >>>> rmmod usbhid >>>> insmod usbhid >>>> >>>> And the console hung at 100% CPU on the insmod. >>>> Back to 2.6.24.3 again, for now -- I've got work to do. >>>> >>>> The specs of this machine have been posted with great regularity >>>> in the past, every new kernel revision it seems. So here we go again: >>>> >>>> Dell Inspiron 9400 notebook, Intel Core2Duo T7400, 2GB SDRAM. >>> .. >>> >>> Correction there: 3GB of RAM, not 2. >> >> 3GB of RAM can be a problem. Try iommu=soft. .. but in such case >> rmmod/insmod of usbhid would not help... > .. > > Booted with mem=2GB, and USB hung again on the first suspend/resume cycle. .. And booting with iommu=soft is worse: video comes back with bizarre timings after suspend/resume -- totally unsynced display afterwards. Cheers -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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