Lubuntu 13.10 on Sony Vaio PCG-F540 - Wrong Colors

[Federico Leoni]

2013/11/14 Nio Wiklund <nio.wiklund at gmail.com>:
> On 2013-11-14 07:21, Aere Greenway wrote:
>> All:
>>
>> I just installed Lubuntu 13.10 (alternate i386) in a Sony PCG-F540
>> netbook computer (256 megabytes RAM) for a friend.
>>
>> It appears to run fine, and the graphics have good resolution (none of
>> the jagged graphics I've seen on Intel graphics, for example).
>>
>> But there is one glaring problem: The colors are wrong. Basically,
>> blue appears as green, and red appears as blue.
>>
>> When I load a Lubuntu (LXLE) 12.04 live CD into the machine, the colors
>> are correct. Also, trying the Xubuntu 12.04 Live CD (not successfully
>> loaded with only 256 meg. RAM), the colors appear to be correct.
>>
>> Is the Sony PCG-F540 Netbook another instance of a machine where the
>> graphics have been abandoned by the Linux kernel developers?
>>
>> Or is there some color profile that can be loaded?
>>
>> Only the colors appear wrong (the default Lubuntu wallpaper is green).
>>
> Hi Aere,
>
> What graphics chip or card is there in that computer? If an old Intel
> card, try UXA again according to this tip
>
> Edit (or create) /etc/X11/xorg.conf as follows: (ugh, can't format,
> should be a tab before each line except the first and the last).
>
> Section "Device"
> Identifier "Intel Graphics"
> Driver "intel"
> Option "AccelMethod" "uxa"
> EndSection
>
> Restart X (reboot, restart your display manager, whatever).
>
> If not Intel, or this does not work, maybe there is another solution,
> that someone with the same graphics chip/card can give you. If not here,
> try at the Ubuntu Forums.
>
> Good luck
> Nio
>
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The Sony VAIO PCG-F540 has a video card from NeoMagic (MagicMedia 256AV+)
that seems to be fully supported by Ubuntu 13.10:

http://manpages.ubuntu.com/manpages/saucy/en/man4/neomagic.4.html

if the display works fine on 12.04 live CD without any additional parameter
then you probably need to open a bug report against
xserver-xorg-video-neomagic. I had a look to Launchpad and the bugs I found
are listed here:

https://bugs.launchpad.net/bugs/+bugs?field.searchtext=neomagic&search=Search+Bug+Reports&field.scope=all&field.scope.target=

But I didn't see nothing about wrong colors, just banding issues due to the
lack of dithering on drivers.

And Aere, did you try with a Lubuntu 12.04 live CD to see if the color are
right? As far as I remember LXLE is focused to strongly support old
chipsets too. Perhaps they are using some additional settings or different
drivers.

Let us know.

F.
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