Ghaith Hachem schreef:
> On 3/8/06, Holly Bostick <[EMAIL PROTECTED]> wrote:
>
>> What video card do you have and what drivers?
>>
>> I've had similar problems (not with this graphical live CD, since I
>> installed Gentoo before it existed, but with X applications and X
>> itself), because I have an ATI card. ATI cards do do that (just
>> shut down the monitor) if 1) using the wrong drivers ("radeon" when
>> card model is one above the 9(2/5?)50 (sorry, can't remember which
>> model is the stopper for the Open Source drivers), and/or 2) DGA is
>> enabled for the fglrx drivers (this will do exactly what you
>> described; it has many times for me, and it is just one of the many
>> PITAs with the fglrx drivers).
> i know ati drivers suck but i booted the live cd on my x300se card so
> i guess it's not really the problem..
I wouldn't bet on that... just because the liveCD boots and loads what
seems to be X doesn't mean that the settings that you ultimately wound
up with for X are sufficient and correct to load a full desktop
environment. The installer has limited needs (so really doesn't need
more than the failsafe vesa drivers), and a full DE has many more
requirements.
Also, the "x####" cards are particularly problematic in terms of X
drivers at this time.
> maybe the screen don't support the resolution set by default (1024 x
> 768 was the resolution the live cd set by default on my pc and it
> worked great)
Well, you might have a point there (no way to know without more detail),
but again, the symptoms of that don't necessarily fit the conditions
you're experiencing. It's true that most modern monitors will shut off
to save themselves if told to operate in parameters out of their range
(for example if I told my monitor to run at 1600x1200 when it only does
1280x1024 with difficulty). But if the resolution is set by default,
then auto detection should have told the x setup what the correct
parameters for your monitor are and the default setting should be within
the correct range. Did you change something, and now the default
resolution is *not* 1024x768 (which ought to work for almost any
monitor, certainly a current flatpanel)? And secondly, as I said, the
usual result of X asking a monitor to display at a higher resolution
than the monitor says it can do is *not* signal loss-- it's either a "no
screens found" error (if the higher resolution is the only setting
available), or display at a much lower resolution than you asked for (if
lower settings are available, X will try them all until it finds one
that fit within the monitor's stated parameters of vsync and hres).
Signal loss, in my experience (which is admittedly limited, but since
most people never experience signal loss at all-- which is as it should
be-- even limited experience seems valuable), indicates a very specific
range of conditions that might cause it, and they are almost all related
to the video card and its drivers and settings, rather than anything to
do with the monitor itself (after all, what do you think sends or
doesn't send a signal to the monitor :-) ?).
What does your Xorg log say (/var/log/Xorg.0.log), and what are your
settings for the monitor and video device in /etc/X11/xorg.conf?
Also, bizarre as it sounds. is this a new card, or have you been
swapping things around inside your case before this install? You might
check the seating and connections of the card. Although your situation
is slightly different from mne-- you have a flat panel which presumably
uses the DVI connector natively, whereas I have a CRT and must use the
included DVI-to-VGA converter plug-- I have noticed that several times
after modifying something internal to the box itself (whether related to
the video card or not), I often had to open the box a second time and
reseat the card and/or the monitor connection, which resolved errors I
would suddenly be getting for "no reason". So you might want to check
that as well, though perhaps the connectors have been redesigned since
my 9800SE came out (and so are not loosened at the slightest little thing).
Holly
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