[mythtv] problem with HDTV in Australia

[Hamish Moffatt]

On Thu, Jul 28, 2005 at 09:26:44PM -0400, Daniel Kristjansson wrote:
> My first guess would be that you should make sure DMA is working. Then
> make sure that there aren't a lot of errors coming out of some driver.
> hdparm and dmesg are your friends here.

> bash-2.05b# hdparm -tT /dev/hda
> 
> /dev/hda:
>  Timing cached reads:   3376 MB in  2.00 seconds = 1688.26 MB/sec
>  Timing buffered disk reads:  144 MB in  3.04 seconds =  47.44 MB/sec

Just to confirm this is not the problem; on my PATA and SATA disks,
respectively (same model disk, but different interface types):

/dev/hda:
 Timing cached reads:   1660 MB in  2.00 seconds = 829.30 MB/sec
 Timing buffered disk reads:  152 MB in  3.04 seconds =  50.02 MB/sec

/dev/sda:
 Timing cached reads:   1664 MB in  2.00 seconds = 831.30 MB/sec
 Timing buffered disk reads:  164 MB in  3.01 seconds =  54.55 MB/sec

/dev/hda:
 multcount    =  0 (off)
 IO_support   =  1 (32-bit)
 unmaskirq    =  1 (on)
 using_dma    =  1 (on)
 keepsettings =  0 (off)
 readonly     =  0 (off)
 readahead    = 256 (on)
 geometry     = 19457/255/63, sectors = 160041885696, start = 0

The best suggestion I've heard is to use TS mode instead of PS.

Hamish
-- 
Hamish Moffatt VK3SB <hamish at debian.org> <hamish at cloud.net.au>