Sorry, for some reason it has now stopped working with knoppix and 2.6.11.12<http://2.6.11.12>. Will try to find out more this weekend. Paul On 9/15/05, Paul Wheeler <paulrwheeler@xxxxxxxxx> wrote: > > Ronnie, Miguel thanks for both of your quick replies. > > Right I from my understanding of the problems I believe that a "race" is > going on as to when this card is detected. I think that it is most likely in > the i2c part of the driver (more justification below). So I have two > questions: > > 1) Seeing as the card works in most cases do the driver writers have the > time and inclination to help find this bug? I am happy to put a lot of > effort into testing and narrowing down where the problem might lie however I > have done no kernel coding (but do know c++ well and am happy to play with > kernel source code but wont know what am doing with it). I dont want to put > all this effort in though for noone to use it. > > 2) Is this the right list for the problem? It is a dvb card though I dont > know whether it is the mt352.c or the bttv-i2c.c files (maybe even some > more generic i2c code) AFAIK the mt352.c is 'maintained' on this list > whereas the bttv-i2c.c is on the v4l list. Is this correct? > > > My reasons for thinking it is a race: My problem started when i changed > the power supply, thats it worked fine before changed the power supply and > stopped. I tried the card in another machine it worked so thought I must > have damaged the motherboard. So changed the motherboard and the same > problem. The card worked in one machine and not another even though both had > identical kernels. However I thought as a last attempt would try a knoppix > CD to see if that worked and it did so installed vanilla-2.6.11.12 kernel > and it worked again. So it consistently works with 2.6.11 and fails with > 2.6.13 on one machine but works with 2.6.13 on anaother. So the problem > can be sorted by both hardware and software changes (seemingly independent). > If it can be assumed that both of these cause and solve the same bug then > the bug must be in both hardware and software, the only way this could > happen is a "race" which is affected by hardware. > > This fits with both Ronny and Miguel's experience. Ronny can seem to > affect the race by leaving his power supply plugged in. > > Ronny, Miguel I would be interested to know if either of you have any > problems with the either the vanilla 2.6.11.12 <http://2.6.11.12> kernel > or the latest version of knoppix 3.9? If you dont then this race has been > introduced since then. I would also like to hear from anyone else who has > had this problem and if it is consistent/different from above. > > Many thanks > > Paul > > P.S. bit more info. The problem only happens at boot, if it is detected > fine it works perfectly till next reboot, if not then wont work till > (possible) next reboot. I have had the card working then reboot the machine > without changing anything software wise and it stops working. > > On 9/14/05, Miguel Yarza <yarza@xxxxxxxxxxxxx > wrote: > > > > Paul Wheeler wrote: > > > > >I have searched the list and the net to try and find a solution to this > > but > > >so far unsuccessfull. The problem is that the dvb frontend is not > > found. I > > >have tried on a different motherboard and still same problem however a > > >different computer it works fine. > > > > > >I get the following in dmesg > > > > > >mt352_read_register: readreg error (reg=127, ret==-5) > > >dvb-bt8xx: A frontend driver was not found for device 109e/0878 > > >subsystem 1461/0771 > > > > > >In both machines I am using Gentoo-2.6.13-r1 kernel. > > > > > >The motherboards that it fails on are: > > > > > >asus p4p800s-x and an aopen intel 865 board > > > > > >it works fine in my shuttle sn41g2. > > > > > >I have tried all possible hardware fixes. > > > > > >The card is recognized to begin with on the motherboard(asus) but after > > a > > >reboot stops and hasnt worked since!! > > > > > >I have noticed others who have had this problem before but no solution > > is > > >posted. Could people possible post what motherboard they have if the > > card > > >works or how they solved this problem if they had it before. > > > > > >Cheers > > > > > >Paul > > > > > > > > Same problem here: > > - the card works great with Shuttle SN41G2 k7 nforce2 chipset > > - but on a K7 ASUS A7N8X-E DELUXE (k7 nforce2 chipset too) "modprobe > > dvb-bt8xx" says: > > > > Sep 14 01:17:23 topocasa kernel: DVB: registering new adapter (bttv0). > > Sep 14 01:17:23 topocasa kernel: mt352_read_register: readreg error > > (reg=127, ret==-5) > > Sep 14 01:17:23 topocasa kernel: dvb-bt8xx: A frontend driver was not > > found for device 109e/0878 subsystem 1461/0771 > > > > Same error with different kernels since 2.6.10 and snapshots from cvs, > > last try with 2.6.12-6 from debian. > > In the hardware front tried with different slots and card combinations, > > no luck. > > A difference with Paul's card behavior is that mine has never been > > recognized. > > > > Cheers > > > > Miguel > > > > _______________________________________________ > > > > linux-dvb@xxxxxxxxxxx > > http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb > > > > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://www.linuxtv.org/pipermail/linux-dvb/attachments/20050915/540e9ea4/attachment.htm
