[Leaplist] CentOS question ....

[Jim Hartley]

Speaking of problems, I am having one which seems to be shared by FC6 
and CentOS ... changing the display resolution. Both come up 1024x768, 
but any attempts to go to 800x600 or 640x480 fail, leaving the screen a 
diagonal mess (what should be vertical goes from upper left to lower 
right). Happens with both Ctl-Alt-Keypad+/- and with the GUI (Gnome) 
resolution selector. FC6 and CentOS use a common /home which is on a 
separate partition and mounted by whichever is booted (and whichever OS 
is running mounts the root of the other one on /other for easy 
comparisons and such). In both the  /etc/X11/xorg.conf files are the 
same. If I set it to boot 800x600 that works but nothing else does. I 
was even able to boot to 1280x1024 (maximum the monitor is rated for) 
but then couldn't change it.

I know it's not hardware,  because Windoze (on yet another partition) 
will switch  properly  between 1024x768 and 800x600 (doesn't give me a 
choice of 640x480).

The relevant parts of xorg.conf are

Section "Monitor"
        Identifier   "Monitor0"
        VendorName   "Monitor Vendor"
        ModelName    "eView 17f3"
        DisplaySize  320        240
        HorizSync    30.0 - 70.0
        VertRefresh  50.0 - 160.0
        Option      "dpms"
EndSection

Section "Device"
        Identifier  "Videocard0"
        Driver      "vesa"
        VendorName  "Videocard vendor"
        BoardName   "VESA driver (generic)"
EndSection

Section "Screen"
        Identifier "Screen0"
        Device     "Videocard0"
        Monitor    "Monitor0"
        DefaultDepth     24
        SubSection "Display"
                Viewport   0 0
                Depth     16
                Modes    "800x600" "640x480"
        EndSubSection
        SubSection "Display"
                Viewport   0 0
                Depth     24
                Modes    "1024x768" "800x600" "640x480"
        EndSubSection
EndSection

The sync rates match the monitor specs. and the video is ATI Radeon® 
Xpress 200 integrated graphics.

Any suggestions?

Jim Hartley

William A. Mahaffey III wrote:
> Jim Hartley wrote:
>
>> Just for your info, FC6 uses 2.6.19 (was 2.6.18 until an update a day 
>> or two ago) and FC6 is pretty similar to CentOS 4 (I have both 
>> installed on different partitions of this machine) so it might be 
>> worth giving FC6 a try ... it fixes some other things, too, but of 
>> course the trade-off is a few things that are bleeding-edge-broken.
>>
>> Jim Hartley
>>
>> William A. Mahaffey III wrote:
>>
>>> William A. Mahaffey III wrote:
>>>
>>>> Damien McKenna wrote:
>>>>
>>>>> On Jan 19, 2007, at 12:14 AM, David Simmons wrote:
>>>>>
>>>>>> It's weird that your optical drives doesn't show up in  
>>>>>> dmesg....maybe double
>>>>>> check connections....replace IDE cables....re-quadruple check the
>>>>>> jumpers
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> Almost every time I've heard of a problem with a newly installed 
>>>>> HD  or optical drive not working it has been because of the cable 
>>>>> and/or  jumpers set incorrectly.  Remember, if you have to drives 
>>>>> on a cable  the drive at the end of the cable should be jumperred 
>>>>> for Master  while the one in the middle should be Slave (I don't 
>>>>> do the cable- select thing myself).  Also, it is best to do one 
>>>>> drive per cable,  but still remember that it must be jumperred 
>>>>> correctly or it probably  still won't work.
>>>>>
>>>>
>>>> I have heard that as well (master last on chain). That is indeed 
>>>> the case here, POST shows LG GSA drive as secondary master & it is 
>>>> indeed the end of chain. I have been thinking a bit (always a dicey 
>>>> proposition) & I have a theory. I installed CentOS 4.4. CentOS is 
>>>> always based on an older (more stable, more thoroughly tested, more 
>>>> mature) code-base. This particular DVD burner is a relatively new 
>>>> (to the market, i.e. newly available) piece of hardware. I bet the 
>>>> installer had some newer driver in it that could cope w/ the 
>>>> *quite* newly available DVD burner, but the installed code has an 
>>>> older driver that can't handle it. Thoughts ?
>>>>
>>>
>>> Just to close this off, it looks like this burner (LG GSA H22N) is 
>>> indeed *not* supported under CentOS 4.4. A bit of more detailed 
>>> googling (pointed to by someone on the CentOS list) indicates that 
>>> this burner is supported for kernels 2.6.14 & up. CentOS uses kernel 
>>> 2.6.9, so apparently nogo ....
>>
>
> Roger that, I just got done installing FC6 x86-64 on a C2D box at 
> work, love it, smooth as silk. I am mostly setup w/ the CentOS here 
> now, have a buddy w/ an older DVD ROM drive that I am haggling for, 
> I'll probably stay w/ the CemtOS for now ....
>