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51
Installation issues / Re: Video Quality & Sound with Intel Drivers
« Last post by phenigma on August 08, 2016, 08:14:12 pm »
Since I'm not actually running any newer Intel video I'm only relating what I've heard.  fbdev is a video driver, like Intel or nvidia.  va-api is the acceleration mechanism that Intel uses, like vdpau on Nvidia.  Tearing is related to vsync and must movies are not recorded in the same refresh rate your monitor/card regularly uses.  This option likely adjusts the monitor vsync to equal the film's frame rate, which eliminates tearing.  This is not desirable for most other day to day tasks, or gaming, which wasn't the highest possible refresh rate.  I know the Intel driver is fubar in 1604 and tschak uses frame buffer on his NUCs with newer Intel video built in.

Sent from my Nexus 5 using Tapatalk

52
Users / Re: Need some dedicated testers.
« Last post by golgoj4 on August 08, 2016, 05:47:55 pm »
53
Installation issues / Re: Video Quality & Sound with Intel Drivers
« Last post by cafedumonde on August 08, 2016, 01:36:32 am »

Thanks Phengma for the quick reply. 

The tearing problem is solved. I added the following to the "Device" section of xorg.conf:

Option "TearFree" "true"

Apparently this is an special option for the Intel driver. It is puzzling to wonder why someone would want tearing.

What is fbdev? Why would it be a better choice than the proprietary driver?

CDM
54
Installation issues / Re: Video Quality & Sound with Intel Drivers
« Last post by phenigma on August 08, 2016, 01:28:08 am »
I believe newer Intel stuff needs fbdev and vaapi for acceleration.

Sent from my Nexus 5 using Tapatalk

55
Installation issues / Video Quality & Sound with Intel Drivers
« Last post by cafedumonde on August 08, 2016, 12:41:09 am »

I have just gotten my new 14.04 installation to drive my Sony CRT television at 1080i but still have a few issues.

LMCE is working fine. I ran the AVWizard to resize the UI and specified sound over HDMI. The UI comes up and seems just as it should.

I think I have problems at a few levels:

1. Video Content is Dark: Is there a gamma or brightness adjustment in Xine, Xwindows, or perhaps in the Intel driver? I just need to brighten things up a bit. Cranking the brightness on the TV adds detail to the dark areas but washes out the brighter ones.

2. Video Tearing: Tearing is apparent when the video content changes quickly. I expect this is a driver issue, though I specified the intel driver in my xorg.conf. I will try switching back to the "fbdev" driver. Does anyone know the difference? Any other ideas? My old system, with the GeForce 6200 looked way better.

3. Horizontal Distortion: There is a slight horizontal wiggle in the CRT scan that happens when bright content transitions through a few lines of video. One possibility is that I may need to tweak my modeline. I used the ATSC timings as a start but there seem to be many variations for 1080i. Another possibility is that my attempt to pass sound over HDMI is somehow screwing up the video.

4. Sound Not Working: Sound is not coming over HDMI. Just a loud static. Sound works great on the HDMI output of my cable box and I run it into the TV exactly the same way. I said "yes" to DTS in the AVWizard. Any links or tips on this?

Once again, any input would be appreciated.

Thanks,

CDM
56
Installation issues / Re: 1080i over HDMI with Intel Graphics
« Last post by cafedumonde on August 08, 2016, 12:17:49 am »
I had success today, using xorg.conf. I did two things. First I specified the Intel driver in the Device section. This yielded a lot of useful information about valid modes for the various outputs on my motherboard in /var/log/Xorg.0.log. Then, I explicitly associated the correct output with the default Screen. I think that these associations are probably more important now that virtually all cards have multiple outputs and  multi-head support is built into X.

Here are the Device, Monitor and Screen sections:

Code: [Select]
Section "Device"
        ### Available Driver options are:-                                                                                                                                                                 
        ### Values: <i>: integer, <f>: float, <bool>: "True"/"False",                                                                                                                                       
        ### <string>: "String", <freq>: "<f> Hz/kHz/MHz"                                                                                                                                                   
        ### [arg]: arg optional                                                                                                                                                                             
        #Option         "NoAccel"                               # [<bool>]                                                                                                                                 
        #Option         "SWcursor"                              # [<bool>]                                                                                                                                 
        #Option         "ColorKey"                              # <i>                                                                                                                                       
        #Option         "CacheLines"                    # <i>                                                                                                                                               
        #Option         "Dac6Bit"                               # [<bool>]                                                                                                                                 
        #Option         "DRI"                                   # [<bool>]                                                                                                                                 
        #Option         "NoDDC"                                 # [<bool>]                                                                                                                                 
        #Option         "ShowCache"                             # [<bool>]                                                                                                                                 
        #Option         "XvMCSurfaces"                  # <i>                                                                                                                                               
        Identifier      "Card0"
        Driver          "intel"
        VendorName      "Unknown Vendor Name"
        BoardName       "Unknown Board Name"
        Option          "LinearAlloc"           "16384"
        #BusID          "PCI:0:2:0"                                                                                                                                                                         
#       Option          "NoDDC"                         "true"                                                                                                                                             
        Option "XvmcUsesTextures" "true"
        Option "renderAccel" "true"
        Option "NoDDCValue"
        Option "UseEDID" "false"
        Option "ExactModeTimingsDVI" "false"
        Option "NoLogo" "true"
        Option "NoBandWidthTest" "true"
        Option "ModeValidation" "NoDFPNativeResolutionCheck, NoEdidMaxPClkCheck, NoMaxPClkCheck, AllowInterlacedModes, AllowNon60HzDFPModes, NoEdidModes"
        Option "DynamicTwinView" "false"
        Option "UseEvents" "true"
        Option "AllowGLXWithComposite" "true"
        Option "AddARGBGLXVisuals" "true"
        Option "monitor-HDMI2" "Monitor0"
EndSection

Section "Monitor"
        Identifier      "Monitor0"
        VendorName      "Unknown Monitor Vendor"
        ModelName       "Unknown Monitor Model"
        Modeline        "1920x1080i"     74.25 1920 1960 2016 2200 1080 1082 1088 1125 Interlace +hsync +vsync
        HorizSync       15-75
        VertRefresh     23-62
EndSection

Section "Screen"
        Identifier      "Screen0"
        Device          "Card0"
        Monitor         "Monitor0"
        DefaultDepth    24
        SubSection "Display"
                Modes           "1920x1080i"
                Virtual         1920 1080
        EndSubSection
        Option "XvmcUsesTextures" "true"
        Option "renderAccel" "true"
        Option "NoDDCValue"
        Option "UseEDID" "false"
        Option "ExactModeTimingsDVI" "false"
        Option "NoLogo" "true"
        Option "NoBandWidthTest" "true"
        Option "ModeValidation" "NoDFPNativeResolutionCheck, NoEdidMaxPClkCheck, NoMaxPClkCheck, AllowInterlacedModes, AllowNon60HzDFPModes, NoEdidModes"
        Option "DynamicTwinView" "false"
        Option "UseEvents" "true"
        Option "AllowGLXWithComposite" "true"
        Option "AddARGBGLXVisuals" "true"
        Option  "TVStandard"    "HD1080i"
EndSection


I am on to the next problem, however. See my next post, on video quality and sound over HDMI.

Thanks to Phenegma for the response on this one.

CDM




57
Installation issues / Re: 1080i over HDMI with Intel Graphics
« Last post by cafedumonde on August 06, 2016, 12:55:18 am »

I have had some success this evening, with xrandr from the command line. I used the following to get my TV to sync at 1080i:

> xrandr --newmode "1920x1080i" 74.25 1920 1960 2016 2200 1080 1082 1088 1125 Interlace +Hsync +Vsync
> xrandr --addmode HDMI2 1920x1080i
> xrandr --output HDMI2 --mode 1920x1080i

At least I know now that this will work. Now I just need to figure out how to make the mode stick when I reboot. I'll continue to work with xorg.conf

CDM
58
Installation issues / Re: 1080i over HDMI with Intel Graphics
« Last post by phenigma on August 05, 2016, 05:34:31 pm »
Modelines in xorg.conf *should* override edid information.  iirc we explicity turn off edid in xorg.conf.  I run used to run my 1080i plasma at 720p due to this issue, with an rpi there I don't have that problem atm.

J.
59
Installation issues / Re: Minor Issues With 1404 Install
« Last post by phenigma on August 05, 2016, 05:31:29 pm »
Thanks for the info.  dvdcss is quite illegal in a lot of countries so it will be left as a manual install.  I'll see if I can figure out what the codecs that package depends on are as we try to limit our dependencies on kubuntu.

Thanks again!

J.
60
Installation issues / Re: Minor Issues With 1404 Install
« Last post by cafedumonde on August 05, 2016, 11:54:32 am »

The codecs were in this package:

sudo apt-get install kubuntu-restricted-extras

and I installed DVD as follows:

sudo /usr/share/doc/libdvdread4/install-css.sh

Before installing these I noticed that here were also some codec packages that were updated withe the normal Kubuntu updates but these did not fix the issue.

All is working now with video playback and adding of media to the library. Thanks to Posde for the help.

Please see my latest post, on getting 1080i to work over HDMI. This is the next barrier.

CDM

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