On Thursday 17 March 2011 04:36:54 Alan Stern wrote: > On Thu, 17 Mar 2011, Mihai DonÈu wrote: > > On Thursday 17 March 2011 00:35:02 RafaÅ MiÅecki wrote: > > > 2011/3/16 Mihai DonÈu <mihai.dontu@xxxxxxxxx>: > > > > Added linux-usb and linux-wireless to CC. > > > > > > > > On Thursday 17 March 2011 00:18:31 Mihai DonÈu wrote: > > > >> Hi, > > > >> > > > >> I have just upgraded to 2.6.38 and discovered that I can't use my > > > >> wireless device (BCM4312 802.11a/b/g). I press Fn + F2, the > > > >> bluetooth led lights and after a second it turns off by itself. In > > > >> dmesg I'm seeing the following: > > > >> > > > >> [ 88.167212] usb 1-2.2: new full speed USB device using ehci_hcd > > > >> and address 5 > > > >> [ 88.782330] usb 1-2.2: USB disconnect, address 5 > > > >> > > > >> I switched to 2.6.37 until I'll have some time to bisect this. In > > > >> the mean time I have attached the output of lspci, interrupts and > > > >> dmesg. > > > > > > I suspect it's WMI related. What is your machine? > > > > It's a Dell Latitude D520 but I can't find a link with full specs (in > > English). > > > > > Please check: > > > https://bugzilla.kernel.org/show_bug.cgi?id=31002 > > > http://comments.gmane.org/gmane.linux.acpi.devel/49577 > > > > > > I can't help you more, I just noticed such a issue reported on ACPI > > > ML, you have to dig into this yourself (or someone else may help you). > > > > Thanks for the links. I'll see if I can get anywhere from there. > > Another thing you can try is to get usbmon traces under both 2.6.37 and > 2.6.38. Instructions are in the kernel source file > Documentation/usb/usbmon.txt. I'm unable to get a usbmon dump on 2.6.37. Strangely, the only USB device making noise (on 0u) is my mouse's wireless receiver. I had no such problem on 2.6.38 though. -- Mihai DonÈu
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2.6.37-config.gz
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2.6.37-lsusb.txt.gz
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2.6.38-1.mon.out.gz
Description: GNU Zip compressed data
