How to over-ride the autoconfigured Device-section?

[Harald Hannelius]

On Tue, 5 Feb 2013, Michel Dänzer wrote:
> On Die, 2013-02-05 at 15:15 +0200, Harald Hannelius wrote:
>>
>> I'd like to try out a few options for the radeon-driver, but I can't for my
>> life figure out why my custom conf-file in /usr/share/X11/xorg.conf.d is
>> ignored.
>>
>> The file looks like this;
>>
>> # cat 53-radeon.conf
>> Section "Device"
>>  	Driver	"radeon"
>>  	#Identifier "Device0"
>>  	#Identifier "Configured Video Device"
>>  	#Identifier "Default Device"
>>  	Identifier "ATI Radeon HD 5570"
>>  	#Identifier "RADEON(0)"
>>  	BusID "PCI:0:1:0:0"
>>  	#ChipID 0x68d9
>>  	#disable
>>  	Option "SwapbuffersWait" "off"
>>  	# enable
>>  	Option "ColorTiling"  "on"
>>  	# enable
>>  	Option "ColorTiling2D" "on"
>> EndSection
>>
>>
>> I seem to be unable to guess at what I should put in the Identifier line so
>> these changes get applied. The files gets read, a typo in it will make the
>> x-server unstartable.
>
> Any particular reason you're not using /etc/X11/xorg.conf instead
> of /usr/share/X11/xorg.conf.d/53-radeon.conf ?

No other than I've got the impression that /etc/X11/xorg.conf is 
deprecated and one should use files in /usr/share/X11/xorg.conf.d/ 
instead. This is on Ubuntu.

I did try renaming that file /etc/X11/xorg.conf to no avail.

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