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Topic: problem with xvesa.lua, inconsistent read of file /tmp/pipe.lua

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minimalistic Offline

Group: Members
Posts: 4
Joined: Sep. 2006

Posted: Sep. 30 2006,13:42

Hello,

xvesa.lua is used to set resolution. From my limited undestanding, it looks like it pipes the output of Xvesa -listmodes to /tmp/pipe.lua, then reads from that file to create buttons to set resolution. My problem is that almost always on the first use or two, tool comes up blank. The file /tmp/pipe.lua always gets created, so I can only assume that the script doesn't read it consistently. Anybody else have this problem? If so, how do you fix it?

mikshaw

Group: Members
Posts: 4856
Joined: July 2004

Posted: Sep. 30 2006,14:35

This seems to be a potential problem:

Code Sample

execute("Xvesa -listmodes 2>/tmp/pipe.lua &")
local file,err = openfile("/tmp/pipe.lua","r")

Xvesa -listmodes is run in the background, and immediately lua tries to open the file. If that file has not yet been created, it will fail. Removing the ampersand should fix it.

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1 replies since Sep. 30 2006,13:42

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Damn Small Linux Board » Non-DSL Topics » Programming and Scripting » problem with xvesa.lua