2013-07-29, 16:21
I've just set up XBMCbuntu on a PC with an NVidia GT520M. It's plugged into a Denon AV amp, along with my cable box, and the Denon outputs to my TV, all HDMI.
I've adjusted the TV settings so that the Cable picture looks excellent. The XBMC picture is not so great - whites are too bright, and darks are too dark. I can play with the XBMC brightness and see plenty of details in either, but never both at the same time.
I exited XBMC and logged in to XBMCbunut and ran nvidia-settings to adjust the Gamma, and saved the ~/.nvidia-settings-rc. But I can not get these settings to be applied when XBMC is running. No matter what I set for gamma values, the XBMC picture is not changed. I see no indication - log, etc - that the settings where applied.
From my research, this seems to be because booting into XBMC does not run a window manager, but correct me if I'm wrong. I have tried using .xinitrc to run nvidia-settings --load-config-only, but again I get no indication that this worked.
What is the correct way to apply the .nvidia-settings-rc to the XBMC session in XBMCbuntu?
[SOLVED - Well, a not-so-desirable workaround to my true problem...]
Solved by enabling Settings... Video... Playback... VDPAU Studio level color conversion
This didn't solve my original question about setting gamma, but - even better - solved my original problem with too-bright whites and too-black darks.
I can now see differences in all levels of a 40-step grey-level calibration video. I can't tell the difference between the 99% and 100% whites, but the 1% and 2% are very clear so I probably just need to adjust the TV a little better.
I've adjusted the TV settings so that the Cable picture looks excellent. The XBMC picture is not so great - whites are too bright, and darks are too dark. I can play with the XBMC brightness and see plenty of details in either, but never both at the same time.
I exited XBMC and logged in to XBMCbunut and ran nvidia-settings to adjust the Gamma, and saved the ~/.nvidia-settings-rc. But I can not get these settings to be applied when XBMC is running. No matter what I set for gamma values, the XBMC picture is not changed. I see no indication - log, etc - that the settings where applied.
From my research, this seems to be because booting into XBMC does not run a window manager, but correct me if I'm wrong. I have tried using .xinitrc to run nvidia-settings --load-config-only, but again I get no indication that this worked.
What is the correct way to apply the .nvidia-settings-rc to the XBMC session in XBMCbuntu?
[SOLVED - Well, a not-so-desirable workaround to my true problem...]
Solved by enabling Settings... Video... Playback... VDPAU Studio level color conversion
This didn't solve my original question about setting gamma, but - even better - solved my original problem with too-bright whites and too-black darks.
I can now see differences in all levels of a 40-step grey-level calibration video. I can't tell the difference between the 99% and 100% whites, but the 1% and 2% are very clear so I probably just need to adjust the TV a little better.