Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932795Ab1CSBiW (ORCPT ); Fri, 18 Mar 2011 21:38:22 -0400 Received: from netrider.rowland.org ([192.131.102.5]:45879 "HELO netrider.rowland.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1756191Ab1CSBiP (ORCPT ); Fri, 18 Mar 2011 21:38:15 -0400 Date: Fri, 18 Mar 2011 21:38:13 -0400 (EDT) From: Alan Stern X-X-Sender: stern@netrider.rowland.org To: Mihai =?utf-8?q?Don=C8=9Bu?= cc: =?utf-8?q?Rafa=C5=82_Mi=C5=82ecki?= , , , Subject: Re: [b43] usb device disconnects automatically after 1s In-Reply-To: <201103190048.27759.mihai.dontu@gmail.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1165 Lines: 29 On Sat, 19 Mar 2011, Mihai Donțu wrote: > > 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. I noticed your config has CONFIG_USB_EHCI_TT_NEWSCHED disabled. You really should enable it (although I doubt that it is responsible for this problem, since 2.6.37 works without it). The 2.6.38 usbmon trace shows pretty much what you might expect: The device connects and is initialized and enumerated normally, then 2 seconds later it disconnects. We really need to see a 2.6.37 usbmon trace to compare for differences. Can you try again? If usbmon isn't working, there's something _very_ strange going on. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/