[From nobody Wed Nov 9 15:24:30 2005 Received: from www.linuxtv.org ([212.227.166.180]) by allen.werkleitz.de with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.54) id 1EZqU9-0005H2-C3; Wed, 09 Nov 2005 14:59:39 +0100 Received: from localhost ([127.0.0.1] helo=www.linuxtv.org) by www.linuxtv.org with esmtp (Exim 4.50) id 1EZqU8-0000K1-Ci; Wed, 09 Nov 2005 14:59:32 +0100 Received: from 81-5-136-19.dsl.eclipse.net.uk ([81.5.136.19] helo=vlad.carfax.org.uk) by www.linuxtv.org with esmtp (Exim 4.50) id 1EZqU7-0000Jt-4V for linux-dvb-maintainer@linuxtv.org; Wed, 09 Nov 2005 14:59:31 +0100 Received: from [10.0.0.7] (helo=carfax.org.uk) by vlad.carfax.org.uk with smtp (Exim 4.50) id 1EZqU1-0001xg-Ur; Wed, 09 Nov 2005 13:59:25 +0000 Received: by carfax.org.uk (sSMTP sendmail emulation); Wed, 9 Nov 2005 13:59:25 +0000 Date: Wed, 9 Nov 2005 13:59:25 +0000 From: Hugo Mills <hugo-lkml@carfax.org.uk> To: linux-dvb-maintainer@linuxtv.org, linux-kernel@vger.kernel.org Message-ID: <20051109135925.GF12751@localhost.localdomain> Mail-Followup-To: Hugo Mills <hugo-lkml@carfax.org.uk>, linux-dvb-maintainer@linuxtv.org, linux-kernel@vger.kernel.org Mime-Version: 1.0 X-GPG-Fingerprint: B997 A9F1 782D D1FD 9F87 5542 B2C2 7BC2 1C33 5860 X-GPG-Key: 1C335860 X-Parrot: It is no more. It has joined the choir invisible. X-IRC-Nicks: darksatanic darkersatanic darkling User-Agent: Mutt/1.5.9i X-BeenThere: linux-dvb-maintainer@linuxtv.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: lkml support contact <linux-dvb-maintainer.linuxtv.org> List-Unsubscribe: <http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb-maintainer>, <mailto:linux-dvb-maintainer-request@linuxtv.org?subject=unsubscribe> List-Archive: <http://www.linuxtv.org/pipermail/linux-dvb-maintainer> List-Post: <mailto:linux-dvb-maintainer@linuxtv.org> List-Help: <mailto:linux-dvb-maintainer-request@linuxtv.org?subject=help> List-Subscribe: <http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb-maintainer>, <mailto:linux-dvb-maintainer-request@linuxtv.org?subject=subscribe> Content-Type: multipart/mixed; boundary="===============1431114066==" Mime-version: 1.0 Sender: linux-dvb-maintainer-bounces@linuxtv.org Errors-To: linux-dvb-maintainer-bounces@linuxtv.org X-SA-Exim-Connect-IP: 212.227.166.180 X-Spam-Checker-Version: SpamAssassin 3.1.0 (2005-09-13) on allen.werkleitz.de X-Spam-Level: X-Spam-Status: No, score=-2.5 required=4.0 tests=AWL,BAYES_00, FORGED_RCVD_HELO autolearn=ham version=3.1.0 Subject: [linux-dvb-maintainer] Multiple USB DVB devices cause hard lockups X-SA-Exim-Version: 4.2 (built Thu, 03 Mar 2005 10:44:12 +0100) X-SA-Exim-Scanned: Yes (on allen.werkleitz.de) --===============1431114066== Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="K/NRh952CO+2tg14" Content-Disposition: inline --K/NRh952CO+2tg14 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline I'm trying to get a pair of Twinhan Alpha II DVB-USB devices working on the same machine. With a single device plugged in, I can quite easily receive and stream data. With both devices connected to the machine, both are recognised. However, use of either device causes some form of stack backtrace (I can't see the top of it to verify what kind) from the kernel, and a hard lock-up. Magic SysRQ is non-functional after the lock-up. Failure cases that I've seen are: - Streaming from device 0 is OK for a few seconds, and then the system locks hard. - Streaming from device 0 is OK. Streaming from device 1 before device 0 crashes locks the device 1 process in D state, and then locks the system hard a few seconds later. I've observed this behaviour on both 2.6.12.2 and 2.6.14. No logs were left from the crashes, and only incomplete information on screen, so I presume that I'll need to get a serial console set up to capture output. A log of the devices being identified on boot-up is attached below, for what it's worth (probably not much). Hugo. Nov 9 11:49:48 src@vlad kernel: ehci_hcd 0000:00:0c.2: EHCI Host Controller Nov 9 11:49:48 src@vlad kernel: ehci_hcd 0000:00:0c.2: new USB bus registered, assigned bus number 1 Nov 9 11:49:48 src@vlad kernel: ehci_hcd 0000:00:0c.2: irq 12, io mem 0xd4000000 Nov 9 11:49:48 src@vlad kernel: ehci_hcd 0000:00:0c.2: park 0 Nov 9 11:49:48 src@vlad kernel: ehci_hcd 0000:00:0c.2: USB 2.0 initialized, EHCI 1.00, driver 10 Dec 2004 Nov 9 11:49:48 src@vlad kernel: hub 1-0:1.0: USB hub found Nov 9 11:49:48 src@vlad kernel: hub 1-0:1.0: 5 ports detected Nov 9 11:49:48 src@vlad kernel: usb 1-2: new high speed USB device using ehci_hcd and address 2 Nov 9 11:49:48 src@vlad kernel: usb 1-3: new high speed USB device using ehci_hcd and address 3 Nov 9 11:49:48 src@vlad kernel: dvb-usb: found a 'Twinhan USB2.0 DVB-T receiver (TwinhanDTV Alpha/MagicBox II)' in warm state. Nov 9 11:49:48 src@vlad kernel: dvb-usb: will pass the complete MPEG2 transport stream to the software demuxer. Nov 9 11:49:48 src@vlad kernel: DVB: registering new adapter (Twinhan USB2.0 DVB-T receiver (TwinhanDTV Alpha/MagicBox II)). Nov 9 11:49:48 src@vlad kernel: dvb-usb: MAC address: 08:ff:ff:ff:ff:ff Nov 9 11:49:48 src@vlad kernel: DVB: registering frontend 0 (Twinhan VP7045/46 USB DVB-T)... Nov 9 11:49:48 src@vlad kernel: dvb-usb: schedule remote query interval to 400 msecs. Nov 9 11:49:48 src@vlad kernel: dvb-usb: Twinhan USB2.0 DVB-T receiver (TwinhanDTV Alpha/MagicBox II) successfully initialized and connected. Nov 9 11:49:48 src@vlad kernel: dvb-usb: found a 'Twinhan USB2.0 DVB-T receiver (TwinhanDTV Alpha/MagicBox II)' in warm state. Nov 9 11:49:48 src@vlad kernel: dvb-usb: will pass the complete MPEG2 transport stream to the software demuxer. Nov 9 11:49:48 src@vlad kernel: DVB: registering new adapter (Twinhan USB2.0 DVB-T receiver (TwinhanDTV Alpha/MagicBox II)). Nov 9 11:49:48 src@vlad kernel: dvb-usb: MAC address: 08:ff:ff:ff:ff:ff Nov 9 11:49:48 src@vlad kernel: DVB: registering frontend 1 (Twinhan VP7045/46 USB DVB-T)... Nov 9 11:49:48 src@vlad kernel: dvb-usb: schedule remote query interval to 400 msecs. Nov 9 11:49:48 src@vlad kernel: dvb-usb: Twinhan USB2.0 DVB-T receiver (TwinhanDTV Alpha/MagicBox II) successfully initialized and connected. Nov 9 11:49:48 src@vlad kernel: usbcore: registered new driver dvb_usb_vp7045 Nov 9 11:49:48 src@vlad kernel: ohci_hcd: 2005 April 22 USB 1.1 'Open' Host Controller (OHCI) Driver (PCI) -- === Hugo Mills: hugo@... carfax.org.uk | darksatanic.net | lug.org.uk === PGP key: 1C335860 from wwwkeys.eu.pgp.net or http://www.carfax.org.uk --- "Your problem is that you have a negative personality." --- "No, I don't!" --K/NRh952CO+2tg14 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (GNU/Linux) iD8DBQFDcgC9ssJ7whwzWGARAq/KAJ9OzODIZd3oexvXHluJIcxEjBJadACfSDWd JhtsY6Ycn38PiJcZzDAUqfU= =lGeV -----END PGP SIGNATURE----- --K/NRh952CO+2tg14-- --===============1431114066== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ linux-dvb-maintainer mailing list linux-dvb-maintainer@linuxtv.org http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb-maintainer --===============1431114066==-- ]