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Worth installing Nouveau?

asked 2015-08-16 10:06:11 -0500

andmalc gravatar image

updated 2015-08-18 21:05:07 -0500

I just installed Fedora 22 on a Thinkpad T530, a model I believe from 2012. All works fine but the graphics are not as crisp/sharp as on my new Chromebook. Using an external display does not improve the crispness. This laptop uses Intel graphics with an optional Nvidia NVS 5400M chip that can be enabled in the BIOS.

My question is: would installing Nouveau make a difference? I don't need accelerated graphics so I don't want to go to the trouble if it won't help with the general quality of the display.

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Thanks. You are correct, confirmed I am running Nouveau.

I connnected my Chromebook to my external monitor. It uses the same resolution there 1920x1024 but its output again looks better.

I don't quite understand your comment about Workstation's high-DPI scaling feature, but here's the gdm log output. Relevent lines may be 66-69.

BTW: you can see it's detecting both the laptop's graphics chipsets: the default Intel and the optional Nvidia

andmalc gravatar imageandmalc ( 2015-08-18 08:14:08 -0500 )edit

DPI Scaling is when you have a small, high resolution display, and if the system used it like a large, high resolution display the text and buttons would be too small to use, so UI elements are made relatively larger to compensate. I didn't think this happened at the xorg level, but I could be wrong - the 66: Virtual size is 1024x768 seems strange. Does ie xrandr and the gnome display settings show the panel's native resolution?

randomuser gravatar imagerandomuser ( 2015-08-18 08:28:06 -0500 )edit

xrandr shows the current and preferred resolution is 1366x768.

I suppose the preferred resolution is another way of saying the native resolution and displaying 1920x1024 on the external monitor requires a kind of simulation to create the appearance of having that many pixels to display. Is that right? That would be why the Chromebook output on the external monitor looks better than the Thinkpad's even though they appear to be at the same resolution.

andmalc gravatar imageandmalc ( 2015-08-18 21:00:26 -0500 )edit

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answered 2015-08-16 12:34:56 -0500

updated 2015-08-16 12:36:26 -0500

Nouveau is the default driver, you are using it unless you've gone to the trouble to use something else. "crispness" is a bit subjective; I wonder if the chromebook has a higher pixel density (read:resolution) but the high-DPI scaling features in Workstation are making it look sharper instead of smaller for you?

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Asked: 2015-08-16 10:06:11 -0500

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Last updated: Aug 18 '15