[mythtv-users] /dev/video1 Vanished?

[William Munson]

Mache Creeger wrote:
> Since I upgraded from 0.19 to 0.20, I have found that random reboots
> of my Fedora Core 5 version 2.6.17-1.2187 server with a dual tuner
> WinTV PVR 500 card, Abit NF7-S2G motherboard, and Nvidia FX6200
> graphics card, sometimes results in a missing "/dev/video1" and just
> a "/dev/video0".  This does not happen all the time, just sometimes,
> with no discernable reason.  When it does, the second tuner becomes
> unavailable for use.
>
> When "/dev/video1" is missing, running "dmesg | grep ivtv" indeed
> shows that when the first tuner was attempted to be initialized there
> were problems loading the driver.  There never seems to be a problem
> loading the very same drivers that failed for the first tuner for the
> second tuner.
>
> I checked the Internet and noted that some folks have suggested that
> "/proc/sys/kernel/hotplug" may be the problem.  On checking the
> contents of the file, I have found it to be empty.  The discussion
> groups suggested that I add "/sbin/hotplug" to the file before
> rebooting.  While this action has helped in the frequency of the
> server coming up with the proper configuration, I still cannot get
> reliable, repeatable boots that always result in both "/dev/video0"
> and "/dev/video1" being available.  Since power outages do cause
> random reboots, I want to make sure that the machine will always
> reboot to the proper state.
>
> Does anyone have an idea on how to fix this problem?
>
> -- Mache
>
> # rpm -qa | grep ivtv
> ivtv-kmdl-2.6.17-1.2187_FC5-0.7.1-118.fc5.at
> perl-Video-ivtv-0.13-8.fc5.at
> ivtv-0.7.1-118.fc5.at
> ivtv-firmware-1.8a-10.at
>
> # rpm -qa | grep nvidia
> kmod-nvidia-1.0.8774-1.2.6.17_1.2187_FC5
> nvidia-graphics8774-kmdl-2.6.17-1.2187_FC5-1.0_8774-75.fc5.at
> xorg-x11-drv-nvidia-1.0.8774-1.lvn5
> nvidia-graphics-devices-1.0-5.fc5.at
My suggestion is to load a different version of the nvidia drivers. As 
far as I can tell, every version of nvidia drivers has some sort of 
problem and many of them are unusable with mythtv. The only version I 
have found to be stable is: 1:0.7.0-117 with firmware 2:1.8a-10. Kernel 
module 2.6.17-1.2142-FC4.