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framebuffer or Xvesa

refreshing the screen
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xvesa problem
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Author Topic: Framebuffer or Xvesa problem on DE2i-150 board  (Read 2262 times)

Offline khalils@kth.se

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Framebuffer or Xvesa problem on DE2i-150 board
« on: March 11, 2014, 05:40:37 AM »
Hi
I try to run TC on a DE2i-150 Terasic board. I tried different TC versions. My problem is that screen is not refreshing smoothly, for example when I move the mouse it mess the screen and it takes some times to clean the mouse movement trace. It is like that when I open a window and move it on the screen. Can somebody help me to find the problem. Is it because of bufferer or Xvesa. Do I need to pass an option in boot time?

Offline Juanito

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Re: Framebuffer or Xvesa problem on DE2i-150 board
« Reply #1 on: March 11, 2014, 05:49:22 AM »
What version of tc are you using?

Xvesa and Xfbdev are separate extensions, which one are you trying to use?

Offline khalils@kth.se

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Re: Framebuffer or Xvesa problem on DE2i-150 board
« Reply #2 on: March 11, 2014, 07:00:17 AM »
Hi
I use Tc 5.2. I have tried some older versions as well. I just use default boot. The only difference is that I use my own BIOS not default which has no ACPI support. Processor is  an Intel Atom N2600 with NM10 chipset (Cedar Trail). On-chip graphic SGX545.

Offline gerald_clark

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Re: Framebuffer or Xvesa problem on DE2i-150 board
« Reply #3 on: March 11, 2014, 07:21:37 AM »
There is no default X driver You are loading one.
Which are you loading?
Xvesa?
Xorg?
Xfbdev?

I would suggest trying Core with the stock BIOS to see if your BIOS is the problem.

Offline khalils@kth.se

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Re: Framebuffer or Xvesa problem on DE2i-150 board
« Reply #4 on: March 11, 2014, 07:45:59 AM »
Thanks for reply
I guess its xvesa since I haven’t changed any setting. I got .iso file from homepage and made a boot-able USB from it. I tried different resolutions in xsetup.sh but still have that problem. 
I tried  pupy linux on the same board . It has not this problem, I guess it uses Xorg but pupy is big and is slow to boot.  TinyCore boots super fast (2-3 seconds) and is small.

Sorry if my question looks basic, I am not that experienced in Linux. But is it possible to create a custom TinyCore package with for example LXDE?  Is there an automated tool to customize and generate tinycore.gz package?

Offline gerald_clark

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Re: Framebuffer or Xvesa problem on DE2i-150 board
« Reply #5 on: March 11, 2014, 07:56:27 AM »
Please read the book and the articles referenced on the top of the home page.
Every installation of Core is custom.  You pick the extensions to load at boot.

http://tinycorelinux.net/

Offline tinypoodle

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Re: Framebuffer or Xvesa problem on DE2i-150 board
« Reply #6 on: March 11, 2014, 08:38:23 AM »
PowerVR graphics is known to be poorly supported, IMHO you might want to look into optimizing graphics before installing a heavier graphical environment like lxde.
"Software gets slower faster than hardware gets faster." Niklaus Wirth - A Plea for Lean Software (1995)