dual head on ATI Radeon Mobility M6 LY
Hi,
I've bought an IBM Thinkpad R32 with an ATI Radeon Mobility M6 LY (rev 0)
card, which supports dual head (at least under the pre-installed Win XP) just
fine.
I've successfully installed Debian/Woody with the experimental XFree86 4.2.1
packages. Now, I want to configure dual head operation with an external
monitor under Linux. I've already read the Xinerama HOWTO and found a message
on this list, that it should work with my card. If I understand things
correctly, one has to put two devices with a different BusID into
/etc/X11/XFree86-4. However, I only find one graphic-adapter on my pci-bus.
Here is output of lspci:
00:00.0 Host bridge: Intel Corp. 82845 845 (Brookdale) Chipset Host Bridge
(rev 04)
00:01.0 PCI bridge: Intel Corp. 82845 845 (Brookdale) Chipset AGP Bridge (rev
04)
00:1d.0 USB Controller: Intel Corp.: Unknown device 2482 (rev 02)
00:1d.1 USB Controller: Intel Corp.: Unknown device 2484 (rev 02)
00:1d.2 USB Controller: Intel Corp.: Unknown device 2487 (rev 02)
00:1e.0 PCI bridge: Intel Corp. 82820 820 (Camino 2) Chipset PCI (-M) (rev 42)
00:1f.0 ISA bridge: Intel Corp.: Unknown device 248c (rev 02)
00:1f.1 IDE interface: Intel Corp.: Unknown device 248a (rev 02)
00:1f.3 SMBus: Intel Corp.: Unknown device 2483 (rev 02)
00:1f.5 Multimedia audio controller: Intel Corp. AC'97 Audio Controller (rev
02)
00:1f.6 Modem: Intel Corp.: Unknown device 2486 (rev 02)
01:00.0 VGA compatible controller: ATI Technologies Inc Radeon Mobility M6 LY
02:07.0 Network controller: Harris Semiconductor: Unknown device 3873 (rev 01)
02:08.0 Ethernet controller: Intel Corp. 82801CAM (ICH3) Chipset Ethernet
Controller (rev 42)
02:09.0 CardBus bridge: Texas Instruments PCI1410 PC card Cardbus Controller
(rev 02)
The only VGA adapter seems to be 01:00.0. Is it correct, that for Xinerama,
there would have to be a second VGA device in this listing? Or is there
another way to set it up correctly? Are there perhaps any kernel/bios
parameters that would result in another vga device popping up in the lspci
listing?
ciao Sebastian
--
Sebastian Kanthak | sebastian.kanthak@muehlheim.de
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