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> Bad display with Intel graphic card, Known problem, solved in other distros
jibe
 Posted: Dec 9 2013, 06:48 PM
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Hi,

Installing SL on a PC, I have a problem with the display :

http://beeservices.dyndns.org/video.png

This is a well-known problem of Xorg with Intel video cards. So, I applied the classic remedy, adding
CODE
Option "DebugWait" "true"

in the "Device" section of /etc/X11/xorg.conf.

The xorg.conf was generated with
CODE
Xorg :1 --configure


But the result is almost the same as I had before, when all works well with Debian based distros (after adding the modif to xorg.conf). The xorg.conf generated with SL is exactly the same as the one generated with Mint...

How could I solve this (without buying a new video card, of course tongue.gif )

Mother board : P5GC MX/1333
Video card (lspci | grep VGA) : 00:02.0 VGA compatible controller: Intel Corporation 82945G/GZ Integrated Graphics Controller (rev 02)
My /etc/xorg.conf :
CODE
Section "ServerLayout"
Identifier     "X.org Configured"
Screen      0  "Screen0" 0 0
InputDevice    "Mouse0" "CorePointer"
InputDevice    "Keyboard0" "CoreKeyboard"
EndSection

Section "Files"
ModulePath   "/usr/lib64/xorg/modules"
FontPath     "catalogue:/etc/X11/fontpath.d"
FontPath     "built-ins"
EndSection

Section "Module"
Load  "glx"
EndSection

Section "InputDevice"
Identifier  "Keyboard0"
Driver      "kbd"
EndSection

Section "InputDevice"
Identifier  "Mouse0"
Driver      "mouse"
Option     "Protocol" "auto"
Option     "Device" "/dev/input/mice"
Option     "ZAxisMapping" "4 5 6 7"
EndSection

Section "Monitor"
Identifier   "Monitor0"
VendorName   "Monitor Vendor"
ModelName    "Monitor Model"
EndSection

Section "Device"
       ### Available Driver options are:-
       ### Values: <i>: integer, <f>: float, <bool>: "True"/"False",
       ### <string>: "String", <freq>: "<f> Hz/kHz/MHz",
       ### <percent>: "<f>%"
       ### [arg]: arg optional
       #Option     "AccelMethod"         # <str>
       #Option     "DRI"                 # [<bool>]
       #Option     "ColorKey"            # <i>
       #Option     "VideoKey"            # <i>
       #Option     "Tiling"              # [<bool>]
       #Option     "LinearFramebuffer"   # [<bool>]
       #Option     "SwapbuffersWait"     # [<bool>]
       #Option     "XvPreferOverlay"     # [<bool>]
       #Option     "HotPlug"             # [<bool>]
       #Option     "RelaxedFencing"      # [<bool>]
       #Option     "Throttle"            # [<bool>]
       #Option     "ZaphodHeads"         # <str>
       #Option     "DelayedFlush"        # [<bool>]
       #Option     "TearFree"            # [<bool>]
       #Option     "PerCrtcPixmaps"      # [<bool>]
       #Option     "FallbackDebug"       # [<bool>]
       #Option     "DebugFlushBatches"   # [<bool>]
       #Option     "DebugFlushCaches"    # [<bool>]
       Option     "DebugWait"           "true"
       #Option     "BufferCache"         # [<bool>]
       #Option     "TripleBuffer"        # [<bool>]
Identifier  "Card0"
Driver      "intel"
BusID       "PCI:0:2:0"
EndSection

Section "Screen"
Identifier "Screen0"
Device     "Card0"
Monitor    "Monitor0"
SubSection "Display"
 Viewport   0 0
 Depth     1
EndSubSection
SubSection "Display"
 Viewport   0 0
 Depth     4
EndSubSection
SubSection "Display"
 Viewport   0 0
 Depth     8
EndSubSection
SubSection "Display"
 Viewport   0 0
 Depth     15
EndSubSection
SubSection "Display"
 Viewport   0 0
 Depth     16
EndSubSection
SubSection "Display"
 Viewport   0 0
 Depth     24
EndSubSection
EndSection
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jibe
 Posted: Dec 10 2013, 01:58 PM
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Hi,

I just tried with CentOS (i386, when my SL is X86_64). All is well, without doing anything. CentOS has neither /etc/X11/xorg.conf file nor /etc/X11/xorg.conf.d folder.

With Linux Mint, I have the problem after a fresh install, but no more when I create /etc/X11/xorg.conf with the DebugWait option set to "true".

Formaly, I tried a lot of distros on this computer (Ubuntu, PClinuxOS, Slitaz, Mageia...) and, if I had often to tweak /etc/X11/xorg.conf, I always succeeded to have a good display...

Just to try, I replaced the whole folder /etc/X11 by the one from CentOS (quick and dirty way, more especially mixing 32 and 64bits versions ! tongue.gif ). It's working, but with the same problem sad.gif

What is so special in SL ?
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burakkucat
 Posted: Dec 10 2013, 06:26 PM
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This is a "completely off the top of my head" reply (so it might turn out to be irrelevant caterwauling on my part) but I wonder if you have a parameter on the kernel line (in your /etc/grub.conf file) which references modeset (or nomodeset)?

If yes, then try without that kernel parameter. wink.gif

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jibe
 Posted: Dec 23 2013, 03:20 PM
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Hi,

Thanks for your reply, burakkucat. And sorry to come back so late... I was very busy and had no time to continue my tests with SL...

QUOTE (burakkucat @ Dec 10 2013, 07:26 PM)
it might turn out to be irrelevant caterwauling on my part

No, no smile.gif When we encounter a problem, everything must be checked, and I forgot to look at the parameters of the kernel, so thanks to remind me that !

Here is the "kernel" line in my menu.lst :
CODE
kernel /boot/vmlinuz-2.6.32-358.23.2.el6.x86_64 ro root=UUID=88bf46fd-b34d-4847-ac4c-3ee40effa013 rd_NO_LUKS rd_NO_MD LANG=fr_FR.UTF-8 SYSFONT=latarcyrheb-sun16 crashkernel=128M  KEYBOARDTYPE=pc KEYTABLE=fr-latin9 rd_NO_LVM rd_NO_DM rhgb quiet

No "modeset" parameter, but there is this SYSFONT parameter...

However, I tried to remove it, and it's the same. sad.gif

I'm not used to tweak video cards and parameters... Could some parameter in my xorg.conf be responsible and/or make things better ? Or could something prevent the action of the "DebugWait" parameter that is very efficient on other distribs ?


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redman
 Posted: Dec 31 2013, 07:26 AM
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If this is a problem you have encountered before, haven't you considered adding an videocard?
These can be found cheap and it might be an easy way out?

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jibe
 Posted: Jan 14 2014, 10:35 PM
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Hi,

QUOTE (redman @ Dec 31 2013, 08:26 AM)
haven't you considered adding an videocard?

It is finally what I did, as I need now to have 2 screens.

But, even if it's possible to get a cheap card, or a second hand one, this is a workaround when the problem is easy to solve on others distros. SL is not really a distro for gamers, so is more used on basic mother boards that often have an Intel graphic chipset. I think that it's too bad that it cannot work well on those MB !
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redman
 Posted: Jan 24 2014, 03:48 PM
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QUOTE (jibe @ Jan 15 2014, 12:35 AM)
SL is not really a distro for gamers ...

Please keep in mind that SL is based on RHEL. RHEL is a distro for servers and datacenters.
So yes, SL is not a distro intended for gamers out of the box wink.gif
More info on what SL is can be found here.

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jibe
 Posted: Mar 17 2014, 06:32 PM
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Hi,

QUOTE (redman @ Jan 24 2014, 04:48 PM)
So yes, SL is not a distro intended for gamers out of the box  wink.gif

Yes, what I meant is just that! And for this reason, SL is often installed on basic mother boards that have an Intel graphic chipset.

I'm installing again SL on one of those mother board, and have again the same problem. I'm almost sure that the problem can be solved with any other distro, including CentOS, like I saw last time... Why does it seems impossible to find a solution with SL ?
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