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Top Forums UNIX for Advanced & Expert Users kernel debug:"Symbol file not found for *.ko" Post 302302109 by yanglei_fage on Monday 30th of March 2009 05:41:05 AM
Old 03-30-2009
kernel debug:"Symbol file not found for *.ko"

When I debug vmlinux with gdb, after it connect to the target, I got below output:

Code:
usbcore.ko: No such file or directory.
Error while mapping shared library sections:
ohci_hcd.ko: No such file or directory.
Symbol file not found for usbcore.ko
Symbol file not found for ohci_hcd.ko
Symbol file not found for binfmt_misc.ko
Symbol file not found for edac_core.ko
Symbol file not found for k8_edac.ko
Symbol file not found for usbhid.ko
Symbol file not found for sg.ko
Symbol file not found for usb_storage.ko
Symbol file not found for ipmi_msghandler.ko
Symbol file not found for ipmi_si.ko
Symbol file not found for ipmi_devintf

I konw we can set the path in the gdb to avoid this, but I wonder what cause above output message?
any idears?
 

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ppmtosixel(1)						      General Commands Manual						     ppmtosixel(1)

NAME
ppmtosixel - convert a portable pixmap into DEC sixel format SYNOPSIS
ppmtosixel [-raw] [-margin] [ppmfile] DESCRIPTION
Reads a portable pixmap as input. Produces sixel commands (SIX) as output. The output is formatted for color printing, e.g. for a DEC LJ250 color inkjet printer. If RGB values from the PPM file do not have maxval=100, the RGB values are rescaled. A printer control header and a color assignment table begin the SIX file. Image data is written in a compressed format by default. A printer control footer ends the image file. OPTIONS
-raw If specified, each pixel will be explicitly described in the image file. If -raw is not specified, output will default to com- pressed format in which identical adjacent pixels are replaced by "repeat pixel" commands. A raw file is often an order of magni- tude larger than a compressed file and prints much slower. -margin If -margin is not specified, the image will be start at the left margin (of the window, paper, or whatever). If -margin is speci- fied, a 1.5 inch left margin will offset the image. PRINTING
Generally, sixel files must reach the printer unfiltered. Use the lpr -x option or cat filename > /dev/tty0?. BUGS
Upon rescaling, truncation of the least significant bits of RGB values may result in poor color conversion. If the original PPM maxval was greater than 100, rescaling also reduces the image depth. While the actual RGB values from the ppm file are more or less retained, the color palette of the LJ250 may not match the colors on your screen. This seems to be a printer limitation. SEE ALSO
ppm(5) AUTHOR
Copyright (C) 1991 by Rick Vinci. 26 April 1991 ppmtosixel(1)
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