Selon Niko Mikkila nm@phnet.fi:
On Thu, 03 Nov 2005 11:37:17 +0100 michaelip@free.fr wrote:
Hello.
Often when starting my computer, vdr crashes without any specific reason
and
freezes the computer ! Nothing is possible/available on my comnputer ! I
just
have to reset it !
Looking at syslog files, I have a long list of kernel PREEMPT, the last one freezing the computer !
Most of this PREMPT finishes with the following line: Nov 3 07:18:39 localhost kernel: <1>Unable to handle kernel NULL pointer dereference at virtual address 00000020
The first PREMPT occurs after a problem on DXR3 card !
Nov 3 07:18:23 localhost vdr[3105]: dxr3: fatal: microcode upload failed:
Timer
expired Nov 3 07:18:23 localhost kernel: em8300: DICOM Update failed Nov 3 07:18:23 localhost kernel: em8300_video.c: Video Fifo timeout Nov 3 07:18:23 localhost vdr[2470]: dxr3: resuscitation: device failure or
user
initiated reset
I have a long list of call traces... It seems that problems cames from a
badly
managed page fault !
I don't know what to do... Does anyone have a suggestion of what I could do
in
order to avoid this ? What could I look in the syslog also ?
Many thanks for any help.
Michael
The PREEMPT messages suggest that you have kernel preemption enabled. That may be a bad idea with Dxr3, so try to compile a new kernel without it.
If that doesn't help, check that Dxr3 doesn't share interrupts with any other device (cat /proc/interrupts). Then you could add some delays to the scripts so that the card has enough time to initialize properly. It is best to load the dxr3 stuff in some script using modprobe with "sleep 2" after the module loading and also after the microcode setup.
-- Niko Mikkilä
vdr mailing list vdr@linuxtv.org http://www.linuxtv.org/cgi-bin/mailman/listinfo/vdr
Hello. I have two devices listening at the same IRQ !
Here is the output of the cat /proc/interrupts CPU0 0: 101477 XT-PIC timer 2: 0 XT-PIC cascade 4: 2086 XT-PIC lirc_serial 5: 0 XT-PIC ehci_hcd:usb1 9: 0 XT-PIC acpi 11: 1017 XT-PIC Skystar2, eth0 12: 6235 XT-PIC em8300 14: 3273 XT-PIC ide0 15: 13 XT-PIC ide1 NMI: 0 ERR: 0
The network card share the same IRQ than my DVB card ! Could I swap one of these card on IRQ 10, knowing that the network card is an intergrated one ?
Many thanks for your help.