[linux-dvb] dib7000p tuning problem solved

Soeren Moch Soeren.Moch at stud.uni-hannover.de
Mon Jan 21 22:19:22 CET 2008


Nicolas Will wrote:
> On Mon, 2008-01-21 at 21:06 +0100, Janne Grunau wrote:
>> On Monday 21 January 2008 18:07:06 Soeren Moch wrote:
>>> Hello!
>>>
>>> The attached patch solves all my vdr tuning problems on a dib7000p
>>> nova-t stick as far as I could check within the last weekend.
>>>
>>> Perhaps this patch can also help nova-t-500 users.
>> It won't help the nova-t 500 since it uses dib300mc frontend but 
>> attached patch might.
> 
> OK, applies OK, compiles fine.
> 
> Using MythTV.
> 
> Tuning may be faster, or it may be me.

Tuning is faster for me, too.

> Tuning on low signal still does not work, though. ITV4, with mythtv
> saying 49% goes to lock, but no TV.
> 
> What should I be looking for, on fact?

My vdr was hanging with black screen after channel switching in ~5% of
all cases. Besides the faster tuning also in the remaining 95%, this
"black out" problem is solved by the patch.
If you never achieve a lock on certain channels, this might be a
different problem.

> I will be updating the wiki page, tell me if it goes into the main tree,
> please.

Who can say that? Patrick?
If somebody else can confirm improvements, the probability for the main
tree will increase, I guess.

> BTW, there is a number of patches referenced in that page. Could they go
> into the tree at some point ?
> 

Another question: In the dib7000p driver there are msleep(200) and
msleep(45). Would it be better to use schedule_timeout to avoid such
long busy waits?

S:oren




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