Sansa E200 weird line on top of screen.

[meowmeow]

I have the e280 and I have this weird line at the top of the screen as well.

[Ghost]

As far as I can tell, the problem is caused by the two lines of the frame after what is visible on screen (which contain rubbish as they are not used) being wrapped back round to the top of the screen.

Bearing this in mind I have written a patch (ID # 7438) that extends the frame buffer below the screen and writes the first two lines into it. That way the first two lines get written back over themselves.

Not very elegant but until we can figure out a genuine solution this at least covers the line up in Rockbox (not in the OF though interestingly).

Please test it though. I only have one European model E280.

[cpchan]

Wow nice hack!   Both patches work flawlessly. No more annoying screen glitches.

Charles

[dan_a]

I'll check this out and see if we can come up with a solution which works for all Sansas.  Unfortunately I don't have one of the models that has this problem, so it might take a lot of trial and error.

[cpchan]

I'll check this out and see if we can come up with a solution which works for all Sansas.

Thanks for looking into it, dan_a.

Charles

[vitess]

Thanks for the patch. Tried it on my e280, which has the lines issue, using the 20070714 daily (the newer ones spit out an error about not finding sysfont.h during compile - on their own, that is, not because of the patch).

It worked. The first two lines now display what should be there, including when viewing images and playing games. One thing it didn't completely work with is mpegplayer - the first two lines are black. Better than the garbage that was there before, though.

[cpchan]

One thing it didn't completely work with is mpegplayer - the first two lines are black. Better than the garbage that was there before, though.

Strange, my videos are filling up the whole screen.

Charles
 

[tsolless]

I have the problem as well. e260.

EDIT:

My Sansa in the normal firmware already has a couple of black lines built into the normal firmware. Those lines appear to be exactly where the Rockboxs firmware create the pixels. Can anyone else confirm this?

[vitess]

tsolless, are you saying you get this in the original firmware without the Rockbox bootloader installed?

I just uninstalled the Rockbox bootloader from my e280 and started the original firmware, and didn't see rows of black/garbage pixels at the top of the screen. You sure it's not just the gap between the display and chassis you're noticing, which is slightly larger at the top? The black rows of pixels will be distinguishable from that by their slightly backlit appearance.

[tsolless]

No... Look. I apologize for the quality, I'll try to take a picture with my digital later but for now...



See that small area where the white line is above the song number? That is the line of pixels I'm talking about. I just want to know if anyone who has the garbage pixels has that.



As compared to that. As said apologies for the quality.

[Chronon]

Was the top picture taken without the Rockbox bootloader installed on your machine?

[tsolless]

No it isn't. I guess that would affect it. I'll try it out later and see what it does.

[JL]

I have posted a patch to fix this  FS#7692.
make sure you rebuild rockbox and bootloader.

[e280ruser]

Very nicely done.  I see that patch has been commited to the SVN.  Nicely done.

[Daveybaby]

Could somebody that knows what theyre doing (i.e. not me ) update the sansapatcher.exe linked to from the manual to use the fixed bootloader?

If you do i will send you a lovely pie.

[Edit: too late - i ate the pie, sorry. Can somebody please fix it anyway though?]