[Bug 333644] Re: [i915] no valid modes on LVDS / ASUS M6A notebook

[Geir Ove Myhr]

*** This bug is a duplicate of bug 194760 ***
    https://bugs.launchpad.net/bugs/194760

Hi MichaL,
I've included the files from your tgz-file here, so that they are
easier to access and link to.

It seems that the problem is definitely that the computer is not able
to retrieve any EDID information from the monitor. The files from
Hardy shows that this is the case there as well, so xorg has to guess
what resolution to use. Incidentally, it guesses correctly in Hardy
and not later.

While the problem really lies in the hardware, it is sometimes
possible to work around it. I found a master bug report for cases when
EDID information is not available at bug 194760. Read the description
and post the information it asks for in a comment (and mention this
bug 333644). I'll set this as a duplicate to that.

If you want to troubleshoot more yourself, there is a package called
i2c-tools, that contains some programs to play with I2C-buses (the
EDID information in the monitor is transferred over an I2C bus,
seehttp://en.wikipedia.org/wiki/Display_Data_Channel for more on the
technical details). There is a program called i2cdetect that should be
able to detect buses, but I have never used it and don't know any more
details. Most likely, though, your monitor simply has no EDID
information, which happens every now and then but not very often.


** Attachment added: "xorg_i810.txt"
   http://launchpadlibrarian.net/24106657/xorg_i810.txt

** Attachment added: "i810_parsed-edid.err"
   http://launchpadlibrarian.net/24106658/i810_parsed-edid.err

** Attachment added: "intel_parsed-edid.err"
   http://launchpadlibrarian.net/24106659/intel_parsed-edid.err

** Attachment added: "Xorg.0.log_drv_i810"
   http://launchpadlibrarian.net/24106660/Xorg.0.log_drv_i810

** Attachment added: "Xorg.0.log_drv_intel"
   http://launchpadlibrarian.net/24106661/Xorg.0.log_drv_intel

** Attachment added: "xorg_intel.txt"
   http://launchpadlibrarian.net/24106662/xorg_intel.txt

-- 
[i915] no valid modes on LVDS / ASUS M6A notebook
https://bugs.launchpad.net/bugs/333644
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