/lib/modules/3.0.0-1-686-pae/modules.pcimap: No such file or directory

pcimodules command, part of pciutils package, lists all the loaded modules corresponding to the PCI devices found and detected by the kernel. pcimodules needs the modules.pcimap file to run successfully. If missing, then you have to recreate it manually :

fool@localhost:~$ pcimodules
/lib/modules/3.0.0-1-686-pae/modules.pcimap: No such file or directory

root@localhost:~#depmod -m

root@localhost:~# ls -l /lib/modules/3.0.0-1-686-pae/modules.pcimap

-rw-r–r– 1 root root 441540 Sep 26 21:19 /lib/modules/3.0.0-1-686-pae/modules.pcimap

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Finding the right name for your Intel graphics chipset

The output of lspci does not always provide enough information about graphics card and integrated graphics chipsets :

fool@localhost:~$ lspci -nn |egrep “VGA|Display”
00:02.0 VGA compatible controller [0300]: Intel Corporation 4 Series Chipset Integrated Graphics Controller [8086:2e32] (rev 03)
00:02.1 Display controller [0380]: Intel Corporation 4 Series Chipset Integrated Graphics Controller [8086:2e33] (rev 03)

In this case, this information “Intel Corporation 4 Series Chipset Integrated Graphics Controller”  is not sufficient to find the right name of this Intel graphics chipset.  There are two solutions to solve it :

fool@localhost:~$grep -i chipset /var/log/Xorg.0.log

[    17.764] (II) intel: Driver for Intel Integrated Graphics Chipsets: i810,
[    17.770] (II) intel(0): Integrated Graphics Chipset: Intel(R) G41
[    17.770] (–) intel(0): Chipset: “G41”

fool@localhost:~$dmesg |grep -i agp

[    1.008912] Linux agpgart interface v0.103
[    1.009057] agpgart-intel 0000:00:00.0: Intel G41 Chipset
[    1.009142] agpgart-intel 0000:00:00.0: detected gtt size: 2097152K total, 262144K mappable
[    1.010058] agpgart-intel 0000:00:00.0: detected 32768K stolen memory
[    1.010181] agpgart-intel 0000:00:00.0: AGP aperture is 256M @ 0xe0000000

With this information, it will be much more easier to use the right driver and tune the Xorg configuration file. (if necessary)

Hope this helps !