Scientific Linux Forum.org



  Reply to this topicStart new topicStart Poll

> Latest Kernel and Screen Resolution, Problem setting screen resolution
ced193
 Posted: Jun 10 2011, 02:01 PM
Quote Post


SLF Newbie


Group: Members
Posts: 1
Member No.: 182
Joined: 16-May 11









Hi,

I have updated my SL 6 desktop to the include the latest kernel release (2.6.32-131.2.1.el6.x86_64) and I can no longer set my usual screen resolution.

I guess this is related to modesetting/KMS and all that, but I thought it was doing this under kernel (2.6.32-71.29.1.el6.x86_64), which I was using previously.

System: Sun Ultra 20 with NVIDIA NV37GL, running SL6 64-bit.
The graphics card is driving 2 monitors (the card has one port and a cable which splits into 2 DVI ports.

With the previous version of the kernel, I could drive both monitors at 1600x1200 ("side by side"). There was no xorg.conf file and it used Nouveau.

On simply upgrading to the latest kernel (i.e. no other changes -- apart from what the upgrade does by default) the best I can get out of the monitors is 1280x1024. This is the maximum via the Display GUI.

I have tried adding "video=DVI-I-1:1600x1200@60 video=DVI-I-2:1600x1200@60" to the kernel boot line in grub.conf, but this didn't help.

Also tried installing kmod-nvidia, but this didn't find the graphics card -- so have removed it again.

If I boot into the previous kernel (2.6.32-71.29.1.el6.x86_64) it works as before 1600x1200 @ 60.

Any suggestions re restoring higher resolution under the latest kernel please.

Thanks.
PM
^
chance5
 Posted: Jun 10 2011, 07:10 PM
Quote Post


SLF Newbie


Group: Members
Posts: 4
Member No.: 273
Joined: 10-June 11









Hi,
I met the similar problem. I updated my laptop to recent kernel 2.6.32-131.2.1.el6.i686 and my second separate monitor doesn't work. If I come back to previous kernel, it works fine.
Waiting for the fix.
PM
^
redman
 Posted: Jun 10 2011, 07:16 PM
Quote Post


SLF Admin
********

Group: Admins
Posts: 1567
Member No.: 2
Joined: 8-April 11









This sounds like a kernel problem. If it is a bug, we need to wait for Red Hat to fix it.
Or you might want to post it on the bugzilla from Red Hat, more details here.


--------------------
What is SL? - Forum Rules - Info on 3rd Party Repos

Desktop: ASUS P5QPL-AM, Intel Dual-Core E6500, 4GB DDR2, ASUS GeForce GT 430 1GB, SL6.5 x86_64
Laptop: ASUS X58L, Intel Dual-Core T3200, 3GB DDR2, Intel GMA X3100, RHEL6.6 x86_64
Test box: Intel S5000PSL, 2x Intel Xeon E5310, 8GB ECC DDR2 FB-DIMM, ASUS GeForce GT 220 1GB, SL6.5 x86_64
PM
^
Swathe
 Posted: Jun 10 2011, 11:50 PM
Quote Post


SLF Junior
**

Group: Members
Posts: 39
Member No.: 260
Joined: 8-June 11









Other option is to install the nVidia drivers for your GPU
PM
^
redman
 Posted: Jun 11 2011, 05:35 AM
Quote Post


SLF Admin
********

Group: Admins
Posts: 1567
Member No.: 2
Joined: 8-April 11









Which driver are you using?
The one from Nvidia or one from the 3rd party repos?
If it is the last one, it might not have been updated to the latest kernel.


--------------------
What is SL? - Forum Rules - Info on 3rd Party Repos

Desktop: ASUS P5QPL-AM, Intel Dual-Core E6500, 4GB DDR2, ASUS GeForce GT 430 1GB, SL6.5 x86_64
Laptop: ASUS X58L, Intel Dual-Core T3200, 3GB DDR2, Intel GMA X3100, RHEL6.6 x86_64
Test box: Intel S5000PSL, 2x Intel Xeon E5310, 8GB ECC DDR2 FB-DIMM, ASUS GeForce GT 220 1GB, SL6.5 x86_64
PM
^
chance5
 Posted: Jun 11 2011, 03:29 PM
Quote Post


SLF Newbie


Group: Members
Posts: 4
Member No.: 273
Joined: 10-June 11









I was using Nouveau. And now after I download and install Nvidia driver, it works fine.
Thanks a lot!
PM
^
0 User(s) are reading this topic (0 Guests and 0 Anonymous Users)
0 Members:

Topic Options Reply to this topicStart new topicStart Poll