[linux-dvb] trouble with fast scrolling
syphir at syphir.sytes.net
Sun Jun 19 16:16:42 CEST 2005
Wolfgang Rohdewald wrote:
> On Mittwoch 15 Juni 2005 07:28, Wolfgang Rohdewald wrote:
>>if I watch a channel with DD audio like ZDF (even if I only select
>>the normal audio channel) and then do pagewise scrolling in the
>>channel list (right or left arrow), vdr dies soon with
>>Jun 15 07:00:52 mm vdr: clearing device because of consecutive poll timeouts
>>if I watch a channel with only normal audio like RTL, all this does not
>>happen, and scrolling is much faster.
>>this is here with vdr 1.3.25, firmware 261d and 261e do the same.
> C.Y.M tells me he has the same bug but not with 261d, so I checked again.
> I cannot reproduce it with 261d anymore.
> this one works: (first experimental 261e, still named 261d)
> -rw-r--r-- 1 root root 232568 2005-05-28 20:56 dvb-ttpci-01.fw
> md5sum f25a1b57310b1b8aef56cab0973df4d1
> this is the first one that has the problem: (comes up as 261e)
> -rw-r--r-- 1 root root 233524 2005-06-09 11:15 dvb-ttpci-01.fw
> md5sum d0769012eef1695fc14340d0b8864170
> Are there intermediate versions I could try?
> I am using 2.6.12 with my 2 patches applied (no RPBusy/RPStop stuff).
I am in full agreement here with Wolfgang on this problem. The first
experimental version of the firmware, 0x261e (labeled 0x261d), is the last known
firmware that works with Dolby enabled in VDR. I have a feeling there is some
kind of race condition in the drivers and it is losing the current state of the
firmware somewhere. Perhaps the firmware is syncing faster than the drivers can
handle, but it really appears to be a timing issue. I can tune to as many Dolby
PIDs as I want, and nothing crashes. But, as soon as I am tuned to a Dolby PID,
and open up VDR's OSD, VDR dies almost instantly.
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