Hello i have nvidia gtx 650 ti boots oc 2gb with 2 monitors and gt 240 for xen emulation .My screen displays random pixels and freeze in random times . I don't found errors in /var/log/syslog and /var/log/kern.log its nouveau error on nvidia-driver works fine . sometimes there are font errors. uname -a Linux debian 4.9.0-3-amd64 #1 SMP Debian 4.9.30-2+deb9u2 (2017-06-26) x86_64 GNU/Linux dpkg -l | grep nouveau ii libdrm-nouveau2:amd64 2.4.74-1 amd64 Userspace interface to nouvea -specific kernel DRM services -- runtime ii libdrm-nouveau2:i386 2.4.74-1 i386 Userspace interface to nouvea -specific kernel DRM services -- runtime ii xserver-xorg-video-nouveau 1:1.0.13-3 amd64 X.Org X server -- Nouveau display driver -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://lists.freedesktop.org/archives/nouveau/attachments/20170715/1dd239b7/attachment-0001.html> -------------- next part -------------- A non-text attachment was scrubbed... Name: vbios.rom Type: application/octet-stream Size: 100352 bytes Desc: not available URL: <https://lists.freedesktop.org/archives/nouveau/attachments/20170715/1dd239b7/attachment-0001.obj> -------------- next part -------------- A non-text attachment was scrubbed... Name: -10.png Type: image/png Size: 266393 bytes Desc: not available URL: <https://lists.freedesktop.org/archives/nouveau/attachments/20170715/1dd239b7/attachment-0010.png> -------------- next part -------------- A non-text attachment was scrubbed... Name: 9.png Type: image/png Size: 210124 bytes Desc: not available URL: <https://lists.freedesktop.org/archives/nouveau/attachments/20170715/1dd239b7/attachment-0011.png> -------------- next part -------------- A non-text attachment was scrubbed... Name: 8.png Type: image/png Size: 207305 bytes Desc: not available URL: <https://lists.freedesktop.org/archives/nouveau/attachments/20170715/1dd239b7/attachment-0012.png> -------------- next part -------------- A non-text attachment was scrubbed... Name: 7.png Type: image/png Size: 268530 bytes Desc: not available URL: <https://lists.freedesktop.org/archives/nouveau/attachments/20170715/1dd239b7/attachment-0013.png> -------------- next part -------------- A non-text attachment was scrubbed... Name: 6.png Type: image/png Size: 264474 bytes Desc: not available URL: <https://lists.freedesktop.org/archives/nouveau/attachments/20170715/1dd239b7/attachment-0014.png> -------------- next part -------------- A non-text attachment was scrubbed... Name: 5.png Type: image/png Size: 295580 bytes Desc: not available URL: <https://lists.freedesktop.org/archives/nouveau/attachments/20170715/1dd239b7/attachment-0015.png> -------------- next part -------------- A non-text attachment was scrubbed... Name: 4.png Type: image/png Size: 254357 bytes Desc: not available URL: <https://lists.freedesktop.org/archives/nouveau/attachments/20170715/1dd239b7/attachment-0016.png> -------------- next part -------------- A non-text attachment was scrubbed... Name: 3.png Type: image/png Size: 300898 bytes Desc: not available URL: <https://lists.freedesktop.org/archives/nouveau/attachments/20170715/1dd239b7/attachment-0017.png> -------------- next part -------------- A non-text attachment was scrubbed... Name: 1.png Type: image/png Size: 433868 bytes Desc: not available URL: <https://lists.freedesktop.org/archives/nouveau/attachments/20170715/1dd239b7/attachment-0018.png> -------------- next part -------------- A non-text attachment was scrubbed... Name: -11.png Type: image/png Size: 269277 bytes Desc: not available URL: <https://lists.freedesktop.org/archives/nouveau/attachments/20170715/1dd239b7/attachment-0019.png> -------------- next part -------------- A non-text attachment was scrubbed... Name: kern.log Type: text/x-log Size: 2048123 bytes Desc: not available URL: <https://lists.freedesktop.org/archives/nouveau/attachments/20170715/1dd239b7/attachment-0001.bin>