Opened 13 years ago
Closed 13 years ago
Last modified 13 years ago
#5956 closed defect (fixed)
VDPAU causes seg fault when running on second X screen
| Reported by: | Owned by: | Isaac Richards | |
|---|---|---|---|
| Priority: | minor | Milestone: | 0.22 |
| Component: | Video Playback | Version: | head |
| Severity: | low | Keywords: | VDPAU |
| Cc: | Ticket locked: | no |
Description
I have my TV connected to my pc as a second x screen (no xinerama/twinview) Using latest SVN I can use VPDAU fine to play files with mythtv on my monitor [:0.0]. When mythtv is running on the TV [:0.1] playing the same files will crash Mythtv with a segmentation fault. Using the normal renderer all is well. I thought that it could be a VDPAU driver issue, however the patched mplayer can play the same files with VDPAU on the second screen without crashing.
I have attached the console output while trying to play a video.
I am running Ubuntu 8.10 kernel 2.6.27 Nvidia driver 180.11 on an 8800GT 512MB
Attachments (5)
Change History (16)
Changed 13 years ago by
| Attachment: | VDPAU_console_log.txt added |
|---|
comment:1 Changed 13 years ago by
comment:2 Changed 13 years ago by
| Status: | new → infoneeded_new |
|---|
Hi,
Please follow the instructions here:
http://www.mythtv.org/docs/mythtv-HOWTO-22.html
To obtain a full backtrace.
comment:3 Changed 13 years ago by
Hope the backtrace is OK, I have not used gdb before. The action taken was slightly different to the original log as I could not work out how to run mythtv with an argument. This time I started mythfrontend, navigated to a file and played it. Without the debugger running mthfrontend would segfault, with the debugger the screen went black and only kill -9 would close it.
comment:4 Changed 13 years ago by
| Status: | infoneeded_new → new |
|---|
comment:5 Changed 13 years ago by
Update: Since changeset 19241 playing a file with vdpau no longer causes a segfault. It still will not play on a second x screen. I have attached a console log showing the errors.
Changed 13 years ago by
| Attachment: | myth-console2.txt added |
|---|
comment:6 Changed 13 years ago by
| Priority: | major → minor |
|---|---|
| Severity: | high → low |
| Status: | new → infoneeded_new |
Ricahrd, please test the attached patch
comment:7 Changed 13 years ago by
Sorry for the delay, away for christmas.
The patch is successful in that when I use it on my TV it now falls back to a different renderer which has no hardware acceleration. The underlying problem still remains in that VDPAU in mythtv does not work on a second X-screen.
Not sure what you would like me to do ? I can open a new bug report if that would be helpful or provide you with more info if you need it.
Changed 13 years ago by
| Attachment: | console-log-patch-5956-v1.txt added |
|---|
comment:8 Changed 13 years ago by
| Status: | infoneeded_new → new |
|---|
Ricahrd, my guess is the driver simply doesn't support hardware acceleration on the second screen; at least that is what it is trying to tell MythTV.
comment:9 Changed 13 years ago by
| Resolution: | → fixed |
|---|---|
| Status: | new → closed |
comment:10 Changed 13 years ago by
Hardware acceleration is definately supported on a second screen. If you read the original bug report I state that the patched mplayer is accelerated on the second screen. I have just tested this again and it is still the case. I will leave this bug closed and open a fresh one as the description is now misleading. Many thanks for helping with this.
If you need any further information please let me know.