Problem with Ubuntu 11.04, nvidia-current, and kernel 3.0...

[mbobak]

Hi all,

I'm running Ubuntu 11.04, with the lowlatency kernel from the abogani ppa. Recently, that provided me the '3.0.0-7-lowlatency' kernel.

Problem with that is my version of nvidia driver, from 'nvidia-current' package is 270.41.06, which thinks that 3.0 kernel is a development kernel, and the kernel module build fails.

I guess my questions are:
- Has anyone else run into this on Ubuntu 11.04 (or other dists with 3.0 kernel?)
- Will a later version of nvidia driver (280.x) fix the problem?
- Any simple workaround?

Thanks,

-Mark

[JoJo19]

You could try this patch, that I found somewhere in the internet.
I changed Os to O2. Maybe you need only one part of it. 280.13 might work as is.

diff -urN work-OLD/kernel/conftest.sh work-NEW/kernel/conftest.sh
--- work-OLD/kernel/conftest.sh   2011-05-30 19:41:31.000000000 -0700
+++ work-NEW/kernel/conftest.sh   2011-05-30 19:47:23.000000000 -0700
@@ -76,7 +76,9 @@
 }

 build_cflags() {
-    BASE_CFLAGS="-D__KERNEL__ \
+    # Adding -Os optimizer option to work around rcupdate.h compiler bug, see here:
+    # http://choon.net/forum/read.php?21,82725
+    BASE_CFLAGS="-O2 -D__KERNEL__ \
 -DKBUILD_BASENAME=\"#conftest$$\" -DKBUILD_MODNAME=\"#conftest$$\" \
 -nostdinc -isystem $ISYSTEM"

diff -urN work-OLD/kernel/nv-linux.h work-NEW/kernel/nv-linux.h
--- work-OLD/kernel/nv-linux.h   2011-05-16 23:32:19.000000000 -0700
+++ work-NEW/kernel/nv-linux.h   2011-05-30 19:46:06.000000000 -0700
@@ -34,6 +34,9 @@
 #  error This driver does not support 2.5 kernels!
 #elif LINUX_VERSION_CODE < KERNEL_VERSION(2, 7, 0)
 #  define KERNEL_2_6
+#elif LINUX_VERSION_CODE >= KERNEL_VERSION(3, 0, 0)
+/* For compatibility, pretend all kernels 3.0.0 and higher are "2.6" */
+#  define KERNEL_2_6
 #else
 #  error This driver does not support development kernels!
 #endif

[mbobak]

Yep, that's roughly the same patch I came up with.

If anyone has any idea if this issue has been fixed in the latest version of the driver, I'd be interested to know. Is it even on the radar at this point?

Thanks,

-Mark

[gonzo_s]

The latest 280 driver builds no problem for me on Debian. Have you tried it?

[mbobak]

Originally Posted by gonzo_s

The latest 280 driver builds no problem for me on Debian. Have you tried it?

Not yet. Do you know if there's an alternate repository w/ the 280 driver? I prefer to keep things "Ubuntufied" if you know what I mean. :-)

Thanks,

-Mark

[adrianveidt]

The x-updates ppa always has the latest stable nvidia driver for Ubuntu.