Today I installed Ubuntu Control Center (UCC) which has an option for
switching the graphics. I had the open source drivers installed only
(with latest updates to x from xorg-edgers).
With this tool I was able to switch from Intel to ATI graphics (requires
a log off, log on).
How did I know it has really switched?
glxinfo | grep OpenGL
it was Intel at first and ATI afterwards
This sounds promising (only at first).
Unfortunately the open-source drivers for ATI 5470 are not that good,
because even the desktop effects were so much slower than Intel, to the
point of being almost unbearable.
With proprietary drivers I can only get to this point:
[ 1009.972] (==) fglrx(0): NoAccel = NO
[ 1009.972] (==) fglrx(0): ATI 2D Acceleration Architecture enabled
[ 1009.972] (--) fglrx(0): Chipset: "ATI Mobility Radeon HD 5400 Series
" (Chipset = 0x68e0)
[ 1009.972] (--) fglrx(0): (PciSubVendor = 0x103c, PciSubDevice = 0x1603)
[ 1009.972] (==) fglrx(0): board vendor info: third party graphics
adapter - NOT original ATI
[ 1009.972] (--) fglrx(0): Linear framebuffer (phys) at 0xa0000000
[ 1009.972] (--) fglrx(0): MMIO registers at 0xc4400000
[ 1009.972] (--) fglrx(0): I/O port at 0x00003000
[ 1009.972] (==) fglrx(0): ROM-BIOS at 0x000c0000
[ 1009.977] (II) fglrx(0): AC Adapter is used
[ 1009.980] evaluate ATRM failed
[ 1009.980] (II) fglrx(0): Invalid ATI BIOS from int10, the adapter is
not VGA-enabled
[ 1009.981] (EE) fglrx(0): Invalid video BIOS signature!
[ 1009.981] (EE) fglrx(0): GetBIOSParameter failed
[ 1009.981] (EE) fglrx(0): PreInitAdapter failed
[ 1009.981] (EE) fglrx(0): PreInit failed
[ 1009.981] (II) fglrx(0): === [xdl_x760_atiddxPreInit] === end
[ 1009.983] (II) UnloadModule: "fglrx"
[ 1009.983] (II) UnloadModule: "fglrxdrm"
[ 1009.983] (II) UnloadModule: "fglrxdrm"
[ 1009.983] (EE) Screen(s) found, but none have a usable configuration.
[ 1009.983]
Fatal server error:
[ 1009.983] no screens found
[ 1009.983]
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