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Usually artifacts like those manifest themself when the graphics cards is overheating, but since you said most of them disappear after switching desktops it might be some bug in the graphics driver instead. I would advise to check the cards cooling just to make sure the fan hasn't died (if it's active cooled that is).
PC: Antec P182B | Asus P8Z77-V PRO | Intel i5 3570k | 16GB DDR3 | GeForce 450GTS | 4TB HDD | Pioneer BDR-207D | Asus Xonar DX | Altec Lansing CS21 | Eizo EV2736W-BK | Arch Linux x86_64
HTPC: Antec NSK2480 | ASUS M3A78-EM (AMD 780G) | AMD Athlon X3 425 | 8GB DDR2 | GeForce G210 | 2TB HDD | Arch Linux x86_64
Server: Raspberry Pi (model B) | 512MB RAM | 750GB HDD | Arch Linux ARM
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I checked the fan and it's spinning.
It certainly isn't the coolest system, but far from overheating.
I actually cleaned it last week, prior to installing Arch.
It ran Debian before I switched to Arch and there were no such artifacts.
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What Graphic Card and what driver are you using?
how is your screen with lower setting?
Next Monitor, check the xorg.conf if you got the right HorizSync, VertRefresh and screen Depth settings!
openSUSE
Arch Linux
USALUG
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I have a Sapphire ATI RadeOn 9800 Pro 128MB and use the ati-fglrx 8.35.5 drivers.
(Un)fortunately, I can't seem to reproduce the error today.
Yesterday I could reproduce it as often as I wanted, even after rebooting.
I don't know much about how to set up the xorg.conf properly, tried my best,
so if there are mistakes, please enlighten me.
xorg.conf
# Auto-generated by Archie mkxcfg
# altered by me 05.04.07
Section "ServerLayout"
Identifier "Xorg Configured"
Screen 0 "aticonfig-Screen[0]" 0 0
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "PS/2 Mouse" "CorePointer"
EndSection
Section "Files"
RgbPath "/usr/share/X11/rgb"
ModulePath "/usr/lib/xorg/modules"
FontPath "/usr/share/fonts/misc:unscaled"
FontPath "/usr/share/fonts/misc"
FontPath "/usr/share/fonts/75dpi:unscaled"
FontPath "/usr/share/fonts/75dpi"
FontPath "/usr/share/fonts/100dpi:unscaled"
FontPath "/usr/share/fonts/100dpi"
FontPath "/usr/share/fonts/Type1"
EndSection
Section "Module"
Load "ddc" # ddc probing of monitor
Load "dbe"
Load "dri"
Load "extmod"
# Load "glx"
Load "bitmap" # bitmap-fonts
Load "type1"
Load "freetype"
Load "record"
EndSection
Section "ServerFlags"
Option "AllowMouseOpenFail" "true"
Option "AIGLX" "off"
EndSection
Section "Extensions"
Option "Composite" "Disable"
EndSection
Section "InputDevice"
Identifier "Keyboard0"
Driver "keyboard"
Option "CoreKeyboard"
Option "XkbRules" "xorg"
Option "XkbModel" "pc105"
Option "XkbLayout" "de"
Option "XkbVariant" "nodeadkeys"
EndSection
Section "InputDevice"
Identifier "PS/2 Mouse"
Driver "mouse"
Option "Protocol" "IMPS/2"
Option "ZAxisMapping" "4 5 6 7"
Option "Device" "/dev/psaux"
Option "Emulate3Buttons" "true"
Option "Emulate3Timeout" "70"
Option "SendCoreEvents" "true"
EndSection
Section "InputDevice"
Identifier "USB Mouse"
Driver "mouse"
Option "Device" "/dev/input/mice"
Option "SendCoreEvents" "true"
Option "Protocol" "IMPS/2"
Option "Buttons" "5"
Option "ZAxisMapping" "4 5"
Option "ButtonMapping" "1 2 3 6 7"
EndSection
Section "Monitor"
Identifier "aticonfig-Monitor[0]"
DisplaySize 312 234 # max 325 x 244 accord. to Samsung SyncMaster 757DFX specs
HorizSync 30.0 - 96.0 # accord. to Samsung
VertRefresh 50.0 - 160.0 # accord. to Samsung
Option "DPMS" "true"
EndSection
Section "Device"
Identifier "aticonfig-Device[0]"
Driver "fglrx"
VendorName "ATI Technologies Inc"
BoardName "R350 [Radeon 9800 Pro]"
# BusID "PCI:1:0:0"
EndSection
Section "Screen"
Identifier "aticonfig-Screen[0]"
Device "aticonfig-Device[0]"
Monitor "aticonfig-Monitor[0]"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
Modes "1280x1024" "1024x768" "800x600" "640x480"
EndSubSection
EndSection
Section "DRI"
Mode 0666
EndSection
cat /var/log/Xorg.0.log | grep EE && cat /var/log/Xorg.0.log |grep WW
Current Operating System: Linux archer1 2.6.20-ARCH #1 SMP PREEMPT Sat Mar 24 10:51:35 CET 2007 i686
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(II) Loading extension MIT-SCREEN-SAVER
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(WW) Open ACPI failed (/var/run/acpid.socket) (No such file or directory)
(WW) fglrx: No matching Device section for instance (BusID PCI:1:0:1) found
I get the same error if i enable BusID "PCI:1:0:0" in xorg.conf, if i instead use PCI:1:0:1 kdm fails to start.
lspci |grep ATI
01:00.0 VGA compatible controller: ATI Technologies Inc Radeon R350 [Radeon 9800 Pro]
01:00.1 Display controller: ATI Technologies Inc Radeon R350 [Radeon 9800 Pro] (Secondary)
Last edited by pjeremy (2007-04-08 13:16:44)
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I'm getting the errors again, so that's not too great.
At least I can report that the errors happen on 1280x1024, 1024x768 and 800x600.
Didn't test 640x480. Any idea?
Also, is there a site which lists well-supported, current hardware
so I can look around if I must buy a new PC ?
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I've had such artifacts from damaged hardware. Try lowering your refresh rate (eg 75 instead of 85 hz) and see if that helps any. You could of course also try the open source "radeon" driver, if your card is supported that is.
"Your beliefs can be like fences that surround you.
You must first see them or you will not even realize that you are not free, simply because you will not see beyond the fences.
They will represent the boundaries of your experience."
SETH / Jane Roberts
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