<div dir="ltr"><div class="gmail_quote"><div dir="ltr">Bonjour Everyone!<div><br></div><div>I am trying to get the video working on an iMac 24" Core 2 Duo with an integrated GeForce 7600 GT. </div><div>The installation disk I am using (Ubuntu Trusty Tahir 14.04.5 LTS modified for the mac) loads nouveau and tries to use the 304 drivers, but fails. </div><div><br></div><div><div>The story of the problem is documented here, but not the solution (yet)</div><div><br></div><div><a href="http://mymanthemaker.blogspot.hk/2017/03/imac-ubuntu-install-gone-wrong-install.html" target="_blank">http://mymanthemaker.blogspot.<wbr>hk/2017/03/imac-ubuntu-<wbr>install-gone-wrong-install.<wbr>html</a><br></div><div><div class="gmail-m_-4066770608646479506gmail_signature"><div dir="ltr"></div></div></div></div><div><br></div><div>When I boot the machine, in the end, this is what I see:</div><div><br></div><div><img src="cid:ii_15b03ea9260a4d82" alt="Inline image 1" width="544" height="408"><br></div><div><br></div><div>I have tried a LOT of different approaches, including trying to disable the nouveau kernel module and installing the following proprietary NVIDIA driver:<br></div><div><br></div><div><div>NVIDIA-Linux-x86_64-304.135.<wbr>run</div></div><div><br></div><div>But I have had no luck at all. </div><div>Before anyone asks me if the video card is messed up, I have seen proper "graphics" displayed on this machine before, sometimes during boot:</div><div><br></div><div><img src="cid:ii_15b03eb70464ca61" alt="Inline image 2" width="544" height="408"><br></div><div><br></div><div>And I ONCE in a user session got a proper video screen with "xinit" that provided me with an old-school xterm and the classic "cross" mouse cursor.</div><div>But when I moved the mouse, or when I stared "xeyes", the machine froze.<br></div><div><br></div><div><div>How can I get some help with troubleshooting this problem?</div></div><div><br></div><div>The dmesg errors I am seeing are:</div><div><br></div><div><div dir="ltr"><div dir="ltr"><font size="1">[ 642.016069] nouveau 0000:01:00.0: DRM: Calling LVDS script 6:</font></div><div dir="ltr"><font size="1">[ 642.016075] nouveau 0000:01:00.0: DRM: 0xC165: Parsing digital output script table</font></div><div>(this is a unique entry)</div><div><br></div></div><div dir="ltr"><div dir="ltr"><font size="1">[ 8.978307] nouveau 0000:01:00.0: fifo: CACHE_ERROR - ch 0 [DRM] subc 3 mthd 0d94 data ffffffff</font></div><div dir="ltr"><font size="1">[ 8.978323] nouveau 0000:01:00.0: fifo: CACHE_ERROR - ch 0 [DRM] subc 3 mthd 0d98 data ffffffff</font></div><div dir="ltr"><font size="1">[ 8.981130] nouveau 0000:01:00.0: fifo: CACHE_ERROR - ch 0 [DRM] subc 3 mthd 0d9c data ffffffff</font></div><div dir="ltr"><font size="1">[ 8.983911] nouveau 0000:01:00.0: fifo: CACHE_ERROR - ch 0 [DRM] subc 3 mthd 0da0 data ffffffff</font></div><div>(thousands of the above are in my dmesg log)</div><div><br></div><div>Also, I don't know if the GeForce 7600 GT uses "low memory" but I am getting the following error:</div><div><br></div><div><div><font size="1">[ 66.016047] Corrupted low memory at ffff8800000019c0 (19c0 phys) = 4f000000</font></div><div><font size="1">[ 66.016932] ------------[ cut here ]------------</font></div><div><font size="1">[ 66.016941] WARNING: CPU: 0 PID: 110 at /build/linux-lts-xenial-<wbr>gUF4JR/linux-lts-xenial-4.4.0/<wbr>arch/x86/kernel/check.c:141 check_for_bios_corruption+<wbr>0x103/0x110()</font></div><div><font size="1">[ 66.016942] Memory corruption detected in low memory</font></div></div><div><br></div></div></div><div>When I execute "startx", this is what I currently see in the terminal window:<br></div><div><div><div class="gmail-m_-4066770608646479506gmail_signature"><div dir="ltr"><div><br></div><div><div><font size="1">root@sentinel:~/NVIDIA# startx</font></div><div><font size="1">hostname: Name or service not known</font></div><div><font size="1">xauth: (stdin):1: bad display name "sentinel:0" in "add" command</font></div><div><font size="1"><br></font></div><div><font size="1"><br></font></div><div><font size="1">X.Org X Server 1.18.3</font></div><div><font size="1">Release Date: 2016-04-04</font></div><div><font size="1">X Protocol Version 11, Revision 0</font></div><div><font size="1">Build Operating System: Linux 3.13.0-92-generic x86_64 Ubuntu</font></div><div><font size="1">Current Operating System: Linux sentinel 4.4.0-31-generic #50~14.04.1-Ubuntu SMP Wed Jul 13 01:07:32 UTC 2016 x86_64</font></div><div><font size="1">Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.4.0-31-generic root=UUID=7cf8c703-124e-4030-8a7a-7146c5ff622d ro text quiet splash text</font></div><div><font size="1">Build Date: 03 August 2016 12:15:46PM</font></div><div><font size="1">xorg-server 2:1.18.3-1ubuntu2.2~trusty2 (For technical support please see <a href="http://www.ubuntu.com/support">http://www.ubuntu.com/support</a>)</font></div><div><font size="1">Current version of pixman: 0.30.2</font></div><div><font size="1"> Before reporting problems, check <a href="http://wiki.x.org">http://wiki.x.org</a></font></div><div><font size="1"> to make sure that you have the latest version.</font></div><div><font size="1">Markers: (--) probed, (**) from config file, (==) default setting,</font></div><div><font size="1"> (++) from command line, (!!) notice, (II) informational,</font></div><div><font size="1"> (WW) warning, (EE) error, (NI) not implemented, (??) unknown.</font></div><div><font size="1">(==) Log file: "/var/log/Xorg.0.log", Time: Sat Mar 25 05:35:58 2017</font></div><div><font size="1">(==) Using config file: "/etc/X11/xorg.conf"</font></div><div><font size="1">(==) Using system config directory "/usr/share/X11/xorg.conf.d"</font></div><div><font size="1">modprobe: FATAL: Module nvidia not found.</font></div><div><font size="1">modprobe: FATAL: Module nvidia not found.</font></div></div><div><div><font size="1">resize called 1920 1200</font></div><div><font size="1">xinit: connection to X server lost</font></div><div><font size="1"><br></font></div><div><font size="1">waiting for X server to shut down ..........</font></div><div><font size="1">xinit: X server slow to shut down, sending KILL signal</font></div><div><font size="1"><br></font></div><div><font size="1">waiting for server to die ...</font></div><div><font size="1">xinit: X server refuses to die</font></div><div><font size="1">xauth: (argv):1: bad display name "sentinel:0" in "remove" command</font></div></div><div><br></div><div>And this is what I see</div><div><br></div><div><img src="cid:ii_15b03fa929cad28f" alt="Inline image 1" width="562" height="422"><br></div><div><br></div><div dir="ltr"><br></div><div dir="ltr"><div>I hope someone can give me some help/advice with this problem.<br></div><div><br></div><div><div class="gmail-m_-4066770608646479506gmail_signature"><div dir="ltr">I am no expert with nouveau...I think I need some help from an expert.. :)</div><div dir="ltr"><br></div></div></div></div><div dir="ltr">Best Regards,<div><br></div><div>Graham Leach</div><div><br></div><div><a href="http://www.graham-leach.com/" target="_blank">www.graham-leach.com</a> | <a href="tel:6977%209076" value="+85269779076" target="_blank">+852 6977 9076</a> | SKYPE: graham_leach | @graham_leach | <a href="http://hk.linkedin.com/in/grahamrleach" target="_blank">hk.linkedin.com/in/<wbr>grahamrleach</a> | <a href="http://about.me/GrahamLeach" target="_blank">about.me/GrahamLeach</a></div></div></div></div></div> </div></div> </div><br></div>