[gentoo-user] Re: Anyone using xfce4 with compositing turned off?

[walt <w41ter@gmail.com>]

On Wed, 26 Aug 2015 09:36:59 +0100
Mick <michaelkintzios@gmail.com> wrote:

> On Wednesday 26 Aug 2015 04:47:24 wabenbau@gmail.com wrote:  
> > walt <w41ter@gmail.com> wrote:    
>   
> > > Then I generated an xorg.conf in the old way using 'Xorg
> > > -configure'. That file didn't work right either.
> > > 
> > > Then I finally realized that the generated xorg.conf had, in the
> > > Section "Device" section, this line:
> > > 
> > > Driver	"radeon"    
> 
> This is the correct driver.
> 
>   
> > > But that's not what we want.  To use the open-source ati driver I
> > > changed that line to read:
> > > 
> > > Driver	"ati"    
> 
> This is what I recall it used to be, but now it is "radeon".  

I just tried an experiment.  I started my xfce4 session twice, once
with Driver "radeon":

(II) LoadModule: "radeon"
[  4055.387] (II) Loading /usr/lib64/xorg/modules/drivers/radeon_drv.so
[  4055.387] (II) Module radeon: vendor="X.Org Foundation"
[  4055.387] 	compiled for 1.17.2, module version = 7.5.0
[  4055.387] 	Module class: X.Org Video Driver
[  4055.387] 	ABI class: X.Org Video Driver, version 19.0


and again with Driver "ati":

(II) LoadModule: "ati"
[  4444.981] (II) Loading /usr/lib64/xorg/modules/drivers/ati_drv.so
[  4444.981] (II) Module ati: vendor="X.Org Foundation"
[  4444.981] 	compiled for 1.17.2, module version = 7.5.0
[  4444.981] 	Module class: X.Org Video Driver
[  4444.981] 	ABI class: X.Org Video Driver, version 19.0

I grant you that tonight I don't see any difference in behavior between
the two "Driver"s, but I did yesterday.  But that was 24 hours ago when
the moon was in a different phase and my evil computer spirits were in
a bad mood, apparently.

As I said, I find this whole subject so confusing that I can't explain
anything about it, even to myself.

To answer wabe's question, lspci -k shows 

00:01.0 VGA compatible controller: Advanced Micro Devices, Inc.
[AMD/ATI] BeaverCreek [Radeon HD 6530D] Subsystem: Lenovo BeaverCreek
[Radeon HD 6530D] Kernel driver in use: radeon
	Kernel modules: radeon