I had the same problem. After some trial and error I found out that the usb message sometimes fail with a timeout error code in gl861. The q1010 and zl10353 then logs the error messages. The tuning then fail. I have no clue to why the message times out, but if I resend the the message it always succeed. This makes the device more reliable. Try the patch (generated agaist http://linuxtv.org/hg/~mkrufky/megasky) / Jonas diff -r 0dd6baab4628 linux/drivers/media/dvb/dvb-usb/gl861.c --- a/linux/drivers/media/dvb/dvb-usb/gl861.c Sat Jan 27 14:48:04 2007 -0500 +++ b/linux/drivers/media/dvb/dvb-usb/gl861.c Sat Feb 10 23:55:04 2007 +0100 @@ -19,6 +19,8 @@ static int gl861_i2c_msg(struct dvb_usb_ static int gl861_i2c_msg(struct dvb_usb_device *d, u8 addr, u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen) { + int err; + int tries; u16 index; u16 value = addr << 8; int wo = (rbuf == NULL || rlen == 0); /* write-only */ @@ -45,8 +47,12 @@ static int gl861_i2c_msg(struct dvb_usb_ return -EINVAL; } - return usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev, 0), req, type, - value, index, rbuf, rlen, 2000); + tries = 0; + do { + err = usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev, 0), req, type, + value, index, rbuf, rlen, 2000); + } while (err == -ETIMEDOUT && ++tries < 3); + return err; } /* I2C */ > Hi everyone! > > The strange thing: > i've strange problems with my Mega Sky usb stick...somtimes it finds some channels (happens almost never) and sometimes it finds some (max was 7 chans). As strange as i think that is, often enough even when i scanned and found some channels it's like a 10% chance to me that i can even display (with kaffeine or xine) the channels i just found. That for that part. > > System info: > I'm using Debian/etch 2.6.17-2-486 and installed the megasky modules from your page via mercurial (hg clone and stuff) everything worked fine. > > modules loaded, that might interesst you (lsmod): > dvb_usb_gl861 6020 0 > dvb_usb 19084 1 dvb_usb_gl861 > dvb_core 69544 1 dvb_usb > firmware_class 9344 2 bttv,dvb_usb > dvb_pll 13956 1 dvb_usb > i2c_core 19216 11 qt1010,zl10353,tuner,tvaudio,msp3400,bttv,dvb_usb,i2c_algo_bit,i2c_viapro,dvb_pll,tveeprom > usbcore 108544 6 dvb_usb_gl861,dvb_usb,usbhid,ehci_hcd,uhci_hcd > i2c_algo_bit 8328 1 bttv > i2c_viapro 8084 0 > > my boot tells me everything worked fine (dmesg): > input: USB HID v1.01 Keyboard [PC-DTV Receiver PC-DTV Receiver] on usb-0000:00:10.4-4 > dvb-usb: found a 'MSI Mega Sky 55801 DVB-T USB2.0' in warm state. > dvb-usb: will pass the complete MPEG2 transport stream to the software demuxer. > DVB: registering new adapter (MSI Mega Sky 55801 DVB-T USB2.0). > bttv0: PLL: 28636363 => 35468950 .DVB: registering frontend 0 (Zarlink ZL10353 DVB-T)... > . ok > Quantek QT1010 successfully identified. > dvb-usb: MSI Mega Sky 55801 DVB-T USB2.0 successfully initialized and connected. > usbcore: registered new driver dvb_usb_gl861 > > and even lsusb tells me it's there: > Bus 005 Device 002: ID 0db0:5581 Micro Star International > > additional information: > everytime i scan or try to tune in one channel dmesg displays lots of these things: > ... > qt1010 I2C write failed > qt1010 I2C write failed > zl10353: write to reg 67 failed (err = 0)! > zl10353: write to reg 70 failed (err = 0)! > zl10353_read_register: readreg error (reg=8, ret==0) > qt1010 I2C write failed > zl10353: write to reg 69 failed (err = 0)! > zl10353_read_register: readreg error (reg=16, ret==0) > zl10353: write to reg 5e failed (err = 0)! > ... > > don't know if it has any bad influence at all (just started using linux). if there's someone who wants direct contact with me to do test/work on some things, you can contact me this way: > IRC: irc.debian.org - #debian - nick: pferdone > ICQ: 121645936 > > if some ppl of the dev-grp want to have a look at my problem, i can set up a sshd and give you access...i think i even remember some ppl of the dev-grp even asked for some systems to test their drivers on. > > Best regards and thx in advance, > pferdone _______________________________________________ linux-dvb mailing list linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
