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Graphics/monitor glitch with Fedora 20 (GNOME)?

asked 2015-01-14 20:46:38 -0500

Malcolm gravatar image

updated 2015-01-15 19:40:38 -0500

skytux gravatar image

Sometimes when I leave my computer on standby, I come back to it looking like this: http://i.imgur.com/abfNG4K.jpg I think it might be happening after the system hibernates and the monitor turns off. Then it's frozen in that state. This doesn't happen every time, but often enough. When I restart the computer things go back to normal, but I'm wondering what exactly it might be and how I can prevent it from happening. My guess is that it might be a monitor/drivers issue, but maybe someone has seen this before and can lead me in the right direction.

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What graphics hardware and associated driver(s) are you using with your system?

bitwiseoperator gravatar imagebitwiseoperator ( 2015-01-15 10:51:56 -0500 )edit

What would be the easiest way to find that information?

Malcolm gravatar imageMalcolm ( 2015-01-18 09:22:21 -0500 )edit

You can execute lspci | grep VGA to locate the device serving as your graphics adapter. That should return to you the slot number of the adapter (e.g. "00:01.0"). You can then execute lspci -ks slot_number (e.g. lspci -ks 00:01.0) to see the make and model of your adapter along with the kernel module being used to operate it.

bitwiseoperator gravatar imagebitwiseoperator ( 2015-01-18 14:12:34 -0500 )edit

Ok, here is what I got as result:

01:00.0 VGA compatible controller: NVIDIA Corporation GK107 [GeForce GTX 650] (rev a1)
Subsystem: ASUSTeK Computer Inc. Device 8431
Kernel driver in use: nouveau
Kernel modules: nouveau
Malcolm gravatar imageMalcolm ( 2015-01-19 02:13:53 -0500 )edit

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answered 2015-01-19 09:29:21 -0500

Ok, so you've got an NVidia card and you're using the standard open source driver (called "nouveau"). While that driver is in pretty good shape relative to other open source graphics drivers, you might consider trying the proprietary NVidia Linux driver which is probably the best Linux graphics driver available. If you try that and the problem vanishes, you could try submitting your system configuration to the FreeDesktop bugzilla.

I'd recommend this:

1) Review the Nouveau troubleshooting page. Follow the steps and see if you can resolve your issue. 2) If that fails, follow the instructions on the Bugs page and submit a bug report. 3) Try blacklisting the nouveau driver and installing the proprietary NVidia driver. Alternatively, you could use the RPMFusion repository and the akmod-nvidia package.

Let us know if we can help further, but I think that's probably the best way to go for you.

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answered 2015-01-15 00:27:33 -0500

rich1974 gravatar image

one thing that i can tell you: replace GDM with lightdm and watch the behavior.

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Asked: 2015-01-14 20:46:38 -0500

Seen: 533 times

Last updated: Jan 19 '15