<html> <head> <meta http-equiv="content-type" content="text/html; charset=utf-8"> </head> <body bgcolor="#FFFFFF" text="#000000"> 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 . <meta http-equiv="content-type" content="text/html; charset=utf-8"> <span style="color: rgb(33, 33, 33); font-size: 29px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: left; text-indent: 0px; text-transform: none; white-space: pre-wrap; word-spacing: 0px; background-color: rgb(255, 255, 255); text-decoration-style: initial; text-decoration-color: initial; display: inline ! important; float: none;">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 </body> </html>