Thanks Patrick. Is this a driver problem then, as the card works fine under M$? Is the driver somehow supposed to limit the power drawn? In addition, using tzap on its own causes the same thing but only tzap and the stick freeze. The system is usable, so I might be able to get another dump. Ta > Received the following kernel oops whilst using scandvb on: >> uname -a > Linux laptop 2.6.14-1.1644_FC4 #1 Sun Nov 27 03:25:11 EST 2005 i686 i686 i386 GNU/Linux > (Dell Latitude C600) > > Sorry about the size, but I'm not sure which of this lot is important!!! This happens everytime I use scandvb or when scanning using Kaffeine (which I think is the same thing :-)). Sometimes the whole lot just freezes and I have to hard reboot. Yes!! Finally I see what the problem is people pointing out all the time in previous threads: Eg.: http://www.linuxtv.org/pipermail/linux-dvb/2005-December/006853.html and other threads (such as Twinhan Alpha Twincard). Those cards in running mode exceed the USB power specification (500mA/device) and that's why: > Dec 28 00:56:39 localhost kernel: dvb-usb: bulk message failed: -71 (1/1) Dec 28 00:56:40 localhost kernel: hub 1-0:1.0: port 1 disabled by hub (EMI?), re-enabling... > Dec 28 00:56:40 localhost kernel: usb 1-1: USB disconnect, address 3 And unfortunately the dvb-usb (or rather the dvb-core) is not capable of hotplug-events and that's why: > Dec 28 00:56:40 localhost kernel: Unable to handle kernel paging request at virtual address d4b0a2a4 > Dec 28 00:56:40 localhost kernel: EIP is at dvb_demux_poll+0x28/0x61 [dvb_core] Because the unplug caused the driver to deallocate the dvb-structures while the device is used by an application. > Dec 28 00:56:41 localhost kernel: usb 1-1: new full speed USB device using uhci_hcd and address 4 > Dec 28 00:56:41 localhost kernel: dvb-usb: found a 'WideView WT-220U PenType Receiver (Typhoon/Freecom)' in warm state. > Dec 28 00:56:41 localhost kernel: dvb-usb: will use the device's hardware PID filter (table count: 15). > Dec 28 00:56:41 localhost kernel: DVB: registering new adapter (WideView WT-220U PenType Receiver (Typhoon/Freecom)). > Dec 28 00:56:41 localhost kernel: DVB: registering frontend 0 (WideView USB DVB-T)... > Dec 28 00:56:41 localhost kernel: dvb-usb: schedule remote query interval to 300 msecs. > Dec 28 00:56:41 localhost kernel: dvb-usb: WideView WT-220U PenType Receiver (Typhoon/Freecom) successfully initialized and connected. Dec 28 00:56:42 localhost kernel: dvb-usb: recv bulk message failed: -110 After sometime the USB hub allows the device to show up again. (it is still in warm state, that's why there is no firmware download). Patrick. -- Mail: patrick.boettcher@xxxxxxx WWW: http://www.wi-bw.tfh-wildau.de/~pboettch/
