<br><br><div><span class="gmail_quote">On 11/19/06, <b class="gmail_sendername">Peter Carlsson</b> <<a href="mailto:maillist.peter@home.se">maillist.peter@home.se</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Hello!<br><br>I have recently observed random DMA errors. Since I haven't had<br>this problem before I haven't taken notice when there was a<br>discussion about DMA errors on this list. Now I have checked<br>the earlier posts but it does not seems to be the exact same
<br>problem.<br><br>I have not done any deep investigation but I thought I would<br>share some observations with the list.<br><br>In /var/log/syslog I sometimes get the following message when<br>recording a program:<br><br>
Nov 18 22:44:11 htpc kernel: ivtv0 warning: ENC: (0) DMA Error 0x0000000b<br>Nov 18 22:44:42 htpc last message repeated 9 times<br>Nov 18 22:45:43 htpc last message repeated 37 times<br>Nov 18 22:46:01 htpc last message repeated 13 times
<br>Nov 18 22:46:04 htpc kernel: ivtv0 warning: ENC: REG_DMAXFER 2 wait failed<br>Nov 18 22:46:08 htpc kernel: ivtv0 warning: ENC: DMA still Pending while stopping<br>capture!<br><br>The problem is that it seems like it only happens when mythfrontend
<br>is running. Any suggestions appreciatad.<br><br>/Peter<br><br>htpc:~# uname -a<br>Linux htpc 2.6.16-2-k7 #1 Fri Aug 18 19:48:42 UTC 2006 i686 GNU/Linux<br><br>htpc:~# dpkg -l *ivtv*<br>Desired=Unknown/Install/Remove/Purge/Hold
<br>| Status=Not/Installed/Config-files/Unpacked/Failed-config/Half-installed<br>|/ Err?=(none)/Hold/Reinst-required/X=both-problems (Status,Err: uppercase=bad)||/<br>Name Version Description<br>+++-==============-==============-============================================
<br>ii ivtv-firmware 1.8.22037 firmware for use with the ivtv kernel driver<br>ii ivtv0.6-module 0.6.3-1+2.6.16 ivtv Linux kernel module (0.6 branch)<br>ii ivtv0.6-source 0.6.3-1 source for ivtv drivers (0.6
branch)<br>ii ivtv0.6-utils 0.6.3-1 utilities for use with the ivtv kernel drive<br>ii libvideo-ivtv- 0.13-3 Perl extension for using V4l2 in the ivtv pe<br>htpc:~#<br>_______________________________________________
<br>mythtv-users mailing list<br><a href="mailto:mythtv-users@mythtv.org">mythtv-users@mythtv.org</a><br><a href="http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users">http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
</a><br></blockquote></div><br>This is a known problem with ivtv and some hardware and cpu powersaving. Check the ivtv user list for some help and a selection of workarounds. <a href="http://ivtvdriver.org/index.php/Mailinglists">
http://ivtvdriver.org/index.php/Mailinglists</a><br><br>Is this error causing video or audio artifacts? Can you easily upgrade your kernel to 2.6.18 and ivtv to 0.8?<br><br>John<br>