Em Fri, 2 Jul 2021 18:06:26 +0100 Tony Houghton <h@xxxxxxxxxxx> escreveu: > Hi, > > I've been having problems with my DVB receivers lately. I'm not sure > whether the problem is in the receivers or their firmware, or Linux. > Some symptoms point to the card, some point to Linux (because they > should try to prevent the system from hanging even with bad hardware > if the hardware is peripheral?). Perhaps the majority of USB DVB > receivers are actually useless junk? > > I'm trying to develop a good DVB PVR, but if I can't fix these > problems there's not much point in continuing. I hope someone can > offer some suggestions on what's causing the problems and/or how I can > diagnose them better, and hopefully get things fixed. > > Frequently one of them will stop working. The main symptom is that > after tuning they fail to get a signal. If I don't "fix" it asap by > power cycling the PC (reboot seems to be inadequate) the situation > seems to escalate until the entire system hangs, either when trying to > use the receiver or at shutdown. This is a very weird behavior. Never saw anything like that happening with an upstream Kernel. Are you using anything else like some proprietary driver or dvbloopback? Are there any messages printed by the Kernel when the machine starts to die? If you're not using dvbloopback or a proprietary driver, I would suspect that your PC hardware could have some issue... perhaps it is overheating or there are some power issues on it, as it doesn't make much sense that a fail to tune would cause a system hang. Thanks, Mauro
