Opened 16 years ago
Closed 16 years ago
#4526 closed defect (invalid)
After watching live tv, screen goes blank, but audio works fine.
Reported by: | Owned by: | danielk | |
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Priority: | minor | Milestone: | 0.22 |
Component: | mythtv | Version: | unknown |
Severity: | medium | Keywords: | |
Cc: | Ticket locked: | no |
Description
I noticed that once I start livetv, it works as expected. If I quit watching live tv, for any reason, and then go back to it, or to watch a recorded program, I get a blank screen. The audio stream is in tact, but there is no video.
I haven't found any diagnostic information in the logs that points to an issue.
Change History (12)
comment:1 Changed 16 years ago by
comment:2 Changed 16 years ago by
Yes, actually. I was using opengl.. But on an intel core 2 quad.... I switched to xv-blit, and the video came back... Good call.
comment:3 Changed 16 years ago by
Good that you can now watch two videos one after another :) It looks like there is a problem with the OpenGL playback thing on dual (multiple) core processors.
I hope the developers can track the problem. If any info is needed on this topic, anyone, please feel free to ask.
comment:5 Changed 16 years ago by
Milestone: | unknown → 0.22 |
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Owner: | changed from Isaac Richards to danielk |
Status: | new → assigned |
comment:6 Changed 16 years ago by
Getting the same problem with Pentium 4 3.0ghz cpu. With a NVIDIA card.
comment:7 Changed 16 years ago by
It looks like this, and #4527 are nvidia driver version specific.
I've gathered data on several machine now and all but one of the systems with the problem are running 169.* on a variety of cores and a variety of nvidia cards. That one that works with the 169.* drivers so far seems to be the odd man out compared to the rest
The machines that are not having it are running the 100.* and 96.43* series of drivers.
I reverted my non working machine to 96.43.05 and now it works fine.
comment:8 Changed 16 years ago by
Following greg's comment, I downgraded my nvidia drivers from 169 to 100 and it worked. I also need to set my OSD renderer to chromakey (using opengl resulted in corruption and stuttering -- maybe due to lowly Nvidia 6200TC card with Celeron 2.93 Ghz CPU).
comment:9 Changed 16 years ago by
nvidia driver version 169.12 doesn't solve the issue either.
I will try downgrading to the latest 100.* driver version. However I suppose that there will be some new GPUs not supported by versions <169.*. (My 7300GT is thankfully supported)
With driver version 169.* I've also had a problem while playing a DVD with the TV playback setting of number of CPUs to be used for decoding set to 2 (I don't know if this also happens with Recordings or is only related to DVD playback). The DVD I tried was a House, Season 1, DVD.
- With 169.09 the playback of this DVD showed horizontal green lines while the video was playing (during the Universal intro video clip which is usually shown at the begining of a DVD prior to the Main Menu).
- With 169.12 the playback crashed immediaetly when the video output was opened.
Both of these problems didn't show when I turn it to 1. I will see if this is also solved by downgrading to driver 100.* version.
In all of the mentioned cases I was using Xv-blit output with Yadif(x2) deinterlacing.
comment:10 Changed 16 years ago by
cymenvig, the 6200 doesn't support chromakey, the video profiles must have selected some other valid profile that your card couldn't handle very well..
comment:11 Changed 16 years ago by
I have tried all 100.14.* version drivers and the problem is still there. Still failing the 2nd time the video renderer is started.
comment:12 Changed 16 years ago by
Resolution: | → invalid |
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Status: | assigned → closed |
Appears to have primarily been a driver problem, the MythTV portion of the code will be quite different when OpenGL video rendering is re-enabled as an option so no point in keeping this ticket around.
Are you using the OpenGL video playback configuration for the TV playback? I have 2 PCs using MythTV. I get that blank screen with audio playing fine too when I use OpenGL playback in a dualcore AMD, but not when I use OpenGL on a single core AMD or when I use XV-blit in any of them.