Public bug reported:
Binary package hint: linux-source
My TV card (Leadtek Winfast TV2000/XP) seems to work only with acpi=off
passed to kernel. When ACPI is enbaled, the picture is just a slideshow,
trying acpi=noirq makes the slideshow just a little faster. This can be
reproduced with any kernel from 2.6.29 to 2.6.32 from mainline ppa, I
tried both Hardy LTS and Karmic, didn't try older kernels as they fail
to boot. This is no X problem, the behavior can be reproduced even
without X and with nvidia module unloaded just by capturing a bit of
video. I tried also to recompile bttv driver with IRQF_SHARED or
IRQF_DISABLED explicitly declared, it didn't change a thing. The rest of
PCI hardware seems to work fine.
When the picture is stuttering dmesg reports:
[ 78.044297] bttv0: timeout: drop=301 irq=1092/1092, risc=595e2b3c, bits:
HSYNC OFLOW
[ 78.604537] bttv0: timeout: drop=312 irq=1132/1132, risc=56822b5c, bits:
HSYNC OFLOW
[ 1081.948327] bttv0: timeout: drop=323 irq=1192/1192, risc=69dad6bc, bits:
HSYNC OFLOW
** Affects: linux-meta (Ubuntu)
Importance: Undecided
Status: New
--
bttv driver working only with acpi=off on ASUS M3N78-EM
https://bugs.launchpad.net/bugs/509219
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