<html>As the original message got caught in the moderation filter, I'm reformatting it with more taken out to pastebin.<br /><br /> To me, the likeliest candidates for the problem look like Compositing still being enebled somewhere, despite being disabled in xorg.conf and the xfce desktop configuration??<br /><br />incorrect rtc permissions, although I don't see this fixing the incorrect refresh rates being consistently chosen.<br /><br />All feedback and tips gratefully received!<br /><br /> Thanks!<br /><br />Marius<br /><br /><br />On Thursday, March 3, 2016 20:40 CET, "Marius Schrecker" <marius.schrecker@lyse.net> wrote:<br /> <blockquote type="cite" cite="f1b7-56d89300-27-7a137080@62856353"> </blockquote>I have followed the judder-free wiki page with<br />Separate Video modes for GUI and TV Playback<br /><br />both set to 1920x1080, auto rate, default aspect.<br /><br />I tried downgrading to nvidia 352.x but had problems compiling /installing against my 4.4.2 kernel. The pre-packaged versions gave me glx problems, so ended up with 358.16, which was the lowest version that built and installed. If this is the likeliest problem I will obviously downgrade the kernel.<br /><br />Here is an example 25fps video<br /><br />I was going to add further examples, but refresh is wrong for all framerates I have tried and the mail is getting long.<br /><br /><span style="line-height: 20.8px;">Compositing is disabled in xorg.conf and in xfce window manager tweaks, although mplayer complains:</span><br /><br /><br /> output from mplayer:<br /><em>VIDEO: 720x304 25.000 fps 0.0 kbps ( 0.0 kB/s)<br />Aspect ratio is 2.40:1 - scaling to correct movie aspect.<br />VO: [vdpau] 720x304 => 729x304 Planar YV12 <br /><strong>[vdpau] Compositing window manager detected. Assuming timing info is inaccurate</strong>.<br />A: 8.0 V: 8.1 A-V: -0.004 ct: 0.000 0/ 0 1% 1% 0.7% 0 0 <br />No bind found for key 'Ctrl+c'.<br />A: 16.0 V: 16.0 A-V: 0.000 ct: 0.000 0/ 0 0% 1% 0.7% 0 </em>0 <br /><br /><br /><br />mythuser@mythbox:/var/lib/mythtv/MOVIES$ xrandr<br />Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 16384 x 16384<br />DVI-I-0 disconnected (normal left inverted right x axis y axis)<br />VGA-0 disconnected (normal left inverted right x axis y axis)<br />DVI-I-1 disconnected (normal left inverted right x axis y axis)<br />HDMI-0 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 1600mm x 900mm<br /> 1920x1080 60.00 + 59.94 50.00 29.97 25.00 23.97* 60.05 60.00 50.04<br /><br />In MythTV I have set up separate GUI and playback modes... as instructed in the judder free wiki page and am using the vdpau high quality profile<br /><br />Mythfrontend log (verbose)<br /><a href="http://pastebin.com/9hxFm6QU">http://pastebin.com/9hxFm6QU</a><br /><br />Note that the refreshrate is not matching the framerate and that frames are being dropped. Also note the permission denied on the rtc<br /><br />$ xrandr<br />Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 16384 x 16384<br />DVI-I-0 disconnected (normal left inverted right x axis y axis)<br />VGA-0 disconnected (normal left inverted right x axis y axis)<br />DVI-I-1 disconnected (normal left inverted right x axis y axis)<br />HDMI-0 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 1600mm x 900mm<br /> 1920x1080 60.00 + 59.94 50.00 29.97 25.00 23.97 60.05 60.00 50.04* <br /> 1360x768 60.02 <br /> 1280x1024 60.02 <br /> 1280x720 60.00 59.94 50.00 <br /> 1152x864 60.00 <br /> 1024x768 60.00 <br /> 800x600 60.32 <br /> 720x576 50.00 50.08 <br /> 720x480 59.94 <br /> 640x480 59.95 59.94 59.93 <br /><br />$ cat xorg.conf<br /><br /> <a href="http://pastebin.com/zkm2qjmH">http://pastebin.com/zkm2qjmH</a><br /><br /><br />vdpau info:<br /><br /><a href="http://pastebin.com/YqvzX6ea">http://pastebin.com/YqvzX6ea</a><br /> <br /><br />Nvidia module:<br /># modinfo nvidia<br />filename: /lib/modules/4.4.2/kernel/drivers/video/nvidia.ko<br />alias: char-major-195-*<br />version: 358.16<br />supported: external<br />license: NVIDIA<br />srcversion: 38681B6CCC0B032F48069CF<br />alias: pci:v000010DEd00000E00sv*sd*bc04sc80i00*<br />alias: pci:v000010DEd*sv*sd*bc03sc02i00*<br />alias: pci:v000010DEd*sv*sd*bc03sc00i00*<br />depends: drm<br />vermagic: 4.4.2 SMP mod_unload modversions <br />parm: NVreg_Mobile:int<br />parm: NVreg_ResmanDebugLevel:int<br />parm: NVreg_RmLogonRC:int<br />parm: NVreg_ModifyDeviceFiles:int<br />parm: NVreg_DeviceFileUID:int<br />parm: NVreg_DeviceFileGID:int<br />parm: NVreg_DeviceFileMode:int<br />parm: NVreg_UpdateMemoryTypes:int<br />parm: NVreg_InitializeSystemMemoryAllocations:int<br />parm: NVreg_UsePageAttributeTable:int<br />parm: NVreg_MapRegistersEarly:int<br />parm: NVreg_RegisterForACPIEvents:int<br />parm: NVreg_CheckPCIConfigSpace:int<br />parm: NVreg_EnablePCIeGen3:int<br />parm: NVreg_EnableMSI:int<br />parm: NVreg_TCEBypassMode:int<br />parm: NVreg_MemoryPoolSize:int<br />parm: NVreg_RegistryDwords:charp<br />parm: NVreg_RmMsg:charp<br />parm: NVreg_AssignGpus:charp<br /><br />$ nvidia-smi -q | grep : | grep -v N/A<br />Timestamp : Thu Mar 3 19:36:14 2016<br />Driver Version : 358.16<br />Attached GPUs : 1<br />GPU 0000:01:00.0<br /> Product Name : GeForce GT 610<br /> Product Brand : GeForce<br /> Persistence Mode : Disabled<br /> GPU UUID : GPU-bda18178-2424-4734-8dd3-d2915077b96f<br /> Minor Number : 0<br /> VBIOS Version : 75.19.55.00.02<br /> Bus : 0x01<br /> Device : 0x00<br /> Domain : 0x0000<br /> Device Id : 0x104A10DE<br /> Bus Id : 0000:01:00.0<br /> Sub System Id : 0x840D1043<br /> Performance State : P8<br /> Total : 1023 MiB<br /> Used : 42 MiB<br /> Free : 981 MiB<br /> Compute Mode : Default<br /> GPU Current Temp : 30 C<br /><br /><br />glx info:<br /><br /><a href="http://pastebin.com/u9vMxFyF">http://pastebin.com/u9vMxFyF</a><br /><br /> </html>