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cakofony
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Joined: 19 Nov 2006
Posts: 152
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 Posted: Sat Sep 06, 2008 2:25 pm Post subject: radeonhd and resolution [solved (kinda)] |
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I am new to ati cards, just upgraded from my 8800gtx to a 4870x2 a couple weeks ago. I am trying to use the radeonhd driver because its much better 2d than the fglrx driver is, and it works with aiglx. My problem is that my resolution is always really low (not sure exactly what it is, looks like 1280x1024 or 1024x768) when I use it, instead of 1600x1200 like it should be (and was with nvidia and fglrx drivers).
I am using the latest radeonhd driver from git, because it supports my card.
xorg.conf:
| Quote: | Section "ServerLayout"
Identifier "X.org Configured"
Screen 0 "Screen0" 0 0
InputDevice "Mouse0" "CorePointer"
InputDevice "Keyboard0" "CoreKeyboard"
EndSection
Section "Files"
RgbPath "/usr/share/X11/rgb"
ModulePath "/usr/lib64/xorg/modules"
FontPath "/usr/share/fonts/misc/"
FontPath "/usr/share/fonts/TTF/"
FontPath "/usr/share/fonts/OTF"
FontPath "/usr/share/fonts/Type1/"
FontPath "/usr/share/fonts/100dpi/"
FontPath "/usr/share/fonts/75dpi/"
EndSection
Section "Module"
Load "record"
Load "xtrap"
Load "extmod"
Load "glx"
Load "dri"
Load "GLcore"
Load "dbe"
Load "type1"
Load "freetype"
EndSection
Section "InputDevice"
Identifier "Keyboard0"
Driver "kbd"
EndSection
Section "InputDevice"
Identifier "Mouse0"
Driver "evdev"
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"
Identifier "Device0"
Driver "radeonhd"
VendorName "ATI Technologies Inc"
BoardName "Unknown Board"
# BusID "PCI:4:0:0"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
DefaultDepth 24
Option "HWCursor" "True"
SubSection "Display"
Depth 24
Modes "1600x1200" #"1280x1024" "1024x768" "800x600" "640x480"
EndSubSection
# SubSection "Display"
# Depth 32
# Modes "1600x1200" #"1280x1024" "1024x768" "800x600" "640x480"
# EndSubSection
EndSection
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also, is there any reason to use a depth of 24 as opposed to 32?
any help is appreciated.
Last edited by cakofony on Sat Sep 06, 2008 6:49 pm; edited 1 time in total |
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cakofony
Apprentice
Joined: 19 Nov 2006
Posts: 152
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| Posted: Sat Sep 06, 2008 6:49 pm Post subject: |
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| nvm, I found out that ati got aiglx working with the fglrx driver! |
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Mad Merlin
Veteran
Joined: 09 May 2005
Posts: 1155
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| Posted: Sun Sep 07, 2008 9:14 pm Post subject: Re: radeonhd and resolution [solved (kinda)] |
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| cakofony wrote: | | also, is there any reason to use a depth of 24 as opposed to 32? |
Technically there's no such thing as 32-bit colour depth. Colours are displayed with 8 bits of red green and blue (= 24 bits), some people count the 8 bits of alpha as colour as well, but they're not really. From the xorg.conf man page:
| Code: |
Depth depth
This entry specifies what colour depth the Display subsection is
to be used for. This entry is usually specified, but it may be
omitted to create a match-all Display subsection or when wishing
to match only against the FbBpp parameter. The range of depth
values that are allowed depends on the driver. Most drivers
support 8, 15, 16 and 24. Some also support 1 and/or 4, and
some may support other values (like 30). Note: depth means the
number of bits in a pixel that are actually used to determine
the pixel colour. 32 is not a valid depth value. Most hardware
that uses 32 bits per pixel only uses 24 of them to hold the
colour information, which means that the colour depth is 24, not
32.
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