[mythtv-users] judder problems with nvidia 358.16

[Marius Schrecker]

On Tuesday, March 8, 2016 09:45 CET, Jean-Yves Avenard <jyavenard at gmail.com> wrote:
 Hi
...
...That's what your problem is then, 50Hz is the closest to 23.93. So myth is doing the right thing as far as its concerned.  Which version of Xrandr do you have installed? Myth only supports 1.2 or the nvidia X extension(libnvctrl) , but this needs to be installed and present. Normally the nvidia installer would install it automatically.  ​I see this on the nvidia release notes for driver 358.16:
Problems that Will Not Be Fixed

NV-CONTROL versions 1.8 and 1.9
Version 1.8 of the NV-CONTROL X Extension introduced target types for setting and querying attributes as well as receiving event notification on targets. Targets are objects like X Screens, GPUs and Quadro Sync devices. Previously, all attributes were described relative to an X Screen. These new bits of information (target type and target id) were packed in a non-compatible way in the protocol stream such that addressing X Screen 1 or higher would generate an X protocol error when mixing NV-CONTROL client and server versions.

This packing problem has been fixed in the NV-CONTROL 1.10 protocol, making it possible for the older (1.7 and prior) clients to communicate with NV-CONTROL 1.10 servers. Furthermore, the NV-CONTROL 1.10 client library has been updated to accommodate the target protocol packing bug when communicating with a 1.8 or 1.9 NV-CONTROL server. This means that the NV-CONTROL 1.10 client library should be able to communicate with any version of the NV-CONTROL server.

NVIDIA recommends that NV-CONTROL client applications relink with version 1.10 or later of the NV-CONTROL client library (libXNVCtrl.a, in the nvidia-settings-358.16.tar.bz2 tarball). The version of the client library can be determined by checking the NV_CONTROL_MAJOR and NV_CONTROL_MINOR definitions in the accompanying nv_control.h.

The only web released NVIDIA Linux driver that is affected by this problem (i.e., the only driver to use either version 1.8 or 1.9 of the NV-CONTROL X extension) is 1.0-8756.

Is that relevant?


BR.

Marius



 
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