<div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">---------- Missatge reenviat ----------<br>From: Janne Grunau <<a href="mailto:janne-mythtvusers@grunau.be">
janne-mythtvusers@grunau.be</a>><br>To: Discussion about mythtv <<a href="mailto:mythtv-users@mythtv.org">mythtv-users@mythtv.org</a>><br>Date: Mon, 25 Jun 2007 15:06:16 +0200<br>Subject: Re: [mythtv-users] will Nova-T 500 work?
<br>On Monday 25 June 2007 08:24:45 Eduard Huguet wrote:<br>> > ---------- Missatge reenviat ----------<br>> > From: Matt Doran <<a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:matt.doran@papercut.biz">
matt.doran@papercut.biz</a>><br>> > To: Discussion about mythtv <<a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:mythtv-users@mythtv.org">mythtv-users@mythtv.org</a>><br>> > Date: Mon, 25 Jun 2007 10:48:15 +1000
<br>> > Subject: Re: [mythtv-users] will Nova-T 500 work?<br>> ><br>> > David Campbell wrote:<br>> > > Henrik Beckman wrote:<br>> > >> On the pre hotplug driver i was, 'Hauppauge Nova-T 500 Dual
<br>> > >> DVB-T successfully deinitialized and disconnected' and then<br>> > >> after a while you got an oops.<br>> > >><br>> > >> On the newer hotplug drivers you get an write failed for mt2060
<br>> > >> error message, I donīt have the exact message at hand right now.<br>> > ><br>> > > <apologies in advance for the bumping of the old thread><br>> > ><br>> > > I am running Kubuntu with their own
2.6.20-15 kernel on my system<br>> > > with EIT and I am seeing the dreaded errors in messages and the<br>> > > card just refuses to tune.<br>> > ><br>> > > Jun 19 02:56:56 kubuntu kernel: [
126723.015463] usb 4-1: USB<br>> > > disconnect, address 3<br>> > > Jun 19 02:56:56 kubuntu kernel: [126723.021150] mt2060 I2C write<br>> > > failed Jun 19 02:56:56 kubuntu kernel: [126723.021495
] mt2060 I2C<br>> > > write failed<br>> > ><br>> > > Does anyone have any advice on making the system more stable? My<br>> > > own kernel? Stop using EIT?<br>> ><br>> > Stop using EIT.
<br>><br>> Also you could effectively try to upgrade your kernel, as it seems<br>> that the problem is closesly related to the USB layout. As a<br>> recommendation, you should also disable the DVB layout in kernel
<br>> options and use lastest HG drivers from LinuxTV.<br>><br>> I'm currently using Sabayon 3.3 (Gentoo) + 2.6.21-r3 + HG drivers<br>> with my Nova-T 500 and the disconnect problem is really sporadic<br>> (also I have EIT on, as I rely solely on it to retrieve program
<br>> listings).<br><br>But you still see disconnects? I haven't seen any in the last weeks and<br>I actually don't remember when I saw the last one. Logs aren't<br>available due to a hd failure.<br><br>I do remember that I haven't seen a disconnect since mid may. I'm using
<br>2.6.21.* and v4l-dvb hg from the same time.<br>The error occured only sporadic here even with mythtv's eit scanning<br>enabled. But more than a month with two reboot and 24/7 running<br>mythbackend is a new record (previous record was 11 days).
<br><br>It's hard to say after which it's safe to assume that the bug is fixed<br>especially since I have no hard statistics.<br> But let's us assume normal distributed values with mean = 5 days and<br>variance = 2 (which are optimistic guesses. more realistic values are
<br>mean = 3 days and standard deviation = 2 days).<br><br>The p-value for seeing one month (31 days) without without usb<br>disconnent is 4.490409e-11. I doubt anyone will claim that that is not<br>significant. I.e. it is very highly unlikely that the disconnects have
<br>still the same occurance pattern.<br>There is a minor drawback, if the disconnects depend on the time since<br>the last reboot it's not over 31 days but just 17 p-value decreases to<br>0.00151. Still significant to the 1% level.
<br><br>Janne<br></blockquote></div><br><br>Yes, I do still see disconnects. However, as you point out, they follow a very irregular pattern. As a matter of example, I've been some weeks (maybe months, I can't remember) without them, and then suddenly this last week I had 2 in 2 consecutive days. I have no idea why, maybe there's some "external" cause (like signal strength oscilations due to weather, AC alterations, I don't know... ) that make them more probable to happen.
<br><br>My computer is not a fully 24/7 server, but it's usually turned on at morning and turned off at night, so it's habitual for it to be working about 12h continuosly. All that time the mythbackend is running with EIT active, so it's always tunning and scanning EIT data.
<br><br>Cheers, <br> Eduard<br><br><br>