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Old 02-06-2007, 12:58 AM   #1
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Question Open source drivers for ATI Radeon 7500 Mobility

Have a IBM R40 laptop and I am trying to get the ATI Radeon 7500 Mobility video card to go higher then 1024x768. I have installed Debian "etch" on this pc after having 'sarge' installed on it. With sarge I could only get 800x600. I have been looking on the net for a few days now and I keep reading about some ATI open source drivers that I can use that will let me get the max resolution from my laptop (1400X1050). I am curious what I have to download and setup to make this all happen since I can not find an article describing the steps other then on a Gentoo box which I am not running. From what I read I will have to edit the xorg file in the X11 directory but I am unclear what takes place after those steps. Also mentions about clearing the previous drivers which I am also unclear of which one's to clear. I have done a lsmod and seen some drivers loaded but which ones to I clear and which ones do I keep? Any help would be appreciated since I dont find a clear cut answer on ATI site of just by googling.
Old 02-06-2007, 07:29 PM   #2
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What driver are you using now?
cat /etc/X11/xorg.conf | grep Driver
If you want to use the fglrx Driver (I would)

Last edited by comprookie2000; 02-06-2007 at 07:34 PM.
Old 02-14-2007, 09:55 AM   #3
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Same question here for a Raedon X1400

From the command you provided, it appears I have the "kdb", "synaptics", and "vesa" drivers, though I have selected the "vesa". Likewise, any help would be greatly appreciated. Thanks.
Old 02-14-2007, 03:52 PM   #4
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You should be able to;
apt-get install fglrx-driver
apt-get install module-assistant
m-a prepare
m-a a-i fglrx

done. Edit your Xorg.conf to use the module

But do some searches because I don't use debian now but I have used module-assistant
and it works great. I just don't know about your card.
Old 02-16-2007, 09:20 AM   #5
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The Mobility 7500 is not supported by ATI's proprietary drivers,... unless someone knows of a hack to make them work...

You need the open source radeon driver which is part of the ATI open source driver tree... You also must configure teh screen and add the necessary modelines for 1500 x 1040. 60 and 75 Hz work ok.

Bear in mind that you will get errors on some open source OpenGL apps that a certain mode is not supported. IF the program squaks about that, you have no recourse... Other than to compile the driver yourself with tweaks. If the program doesn't care, OpenGL should work fine with that driver, DRI being loaded and a couple of tweaks to your xorg.config file, located in /etc/X11...
Old 02-16-2007, 09:31 AM   #6
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It turns out I was using Fedora (not Debian). Sorry about that; I figured one was a derivative of the other. Hopefully, the drivers work on Fedora as well.

That said, I naviagated to the ATI fglrx page for the ATI Mobility X1400 ( and ran the installer. When I selected the drivers and restarted, it blinked a few times, failed, and generated a log file. If there is a way to get that log file to you, let me know; it's too big to copy-paste into this thread. The video modes listed under ATI appear to be the following:

(II) OS-reported resource ranges:
[0] -1 0 0x00100000 - 0x3fffffff (0x3ff00000) MX[B]E(B)
[1] -1 0 0x000f0000 - 0x000fffff (0x10000) MX[B]
[2] -1 0 0x000c0000 - 0x000effff (0x30000) MX[B]
[3] -1 0 0x00000000 - 0x0009ffff (0xa0000) MX[B]
[4] -1 0 0x0000ffff - 0x0000ffff (0x1) IX[B]
[5] -1 0 0x00000000 - 0x000000ff (0x100) IX[B]

(II) Active PCI resource ranges:
[0] -1 0 0xdfcff000 - 0xdfcfffff (0x1000) MX[B]
[1] -1 0 0xdf9fd700 - 0xdf9fd7ff (0x100) MX[B]
[2] -1 0 0xdf9fd600 - 0xdf9fd6ff (0x100) MX[B]
[3] -1 0 0xdf9fd500 - 0xdf9fd5ff (0x100) MX[B]
[4] -1 0 0xdf9fd400 - 0xdf9fd4ff (0x100) MX[B]
[5] -1 0 0xdf9fd800 - 0xdf9fdfff (0x800) MX[B]
[6] -1 0 0xdf9fe000 - 0xdf9fffff (0x2000) MX[B]
[7] -1 0 0xffa80000 - 0xffa803ff (0x400) MX[B]
[8] -1 0 0xdfffc000 - 0xdfffffff (0x4000) MX[B]
[9] -1 0 0xdfdf0000 - 0xdfdfffff (0x10000) MX[B](B)
[10] -1 0 0xc0000000 - 0xcfffffff (0x10000000) MX[B](B)
[11] -1 0 0x000010c0 - 0x000010df (0x20) IX[B]
[12] -1 0 0x0000bfa0 - 0x0000bfaf (0x10) IX[B]
[13] -1 0 0x00000374 - 0x00000374 (0x1) IX[B]
[14] -1 0 0x00000170 - 0x00000170 (0x1) IX[B]
[15] -1 0 0x000003f4 - 0x000003f4 (0x1) IX[B]
[16] -1 0 0x000001f0 - 0x000001f0 (0x1) IX[B]
[17] -1 0 0x0000bf20 - 0x0000bf3f (0x20) IX[B]
[18] -1 0 0x0000bf40 - 0x0000bf5f (0x20) IX[B]
[19] -1 0 0x0000bf60 - 0x0000bf7f (0x20) IX[B]
[20] -1 0 0x0000bf80 - 0x0000bf9f (0x20) IX[B]
[21] -1 0 0x0000ee00 - 0x0000eeff (0x100) IX[B](B)

(II) Active PCI resource ranges after removing overlaps:
(Same as Active PCI resource ranges)


My video card is listed on the compatibilty list, so I don't know what could be wrong. Also, since it's an ATI Mobilty Radeon X1400, should this be in a different thread?

Thanks in advance.

Michael Buchoff

Last edited by mbuchoff; 02-16-2007 at 09:52 AM.
Old 02-22-2007, 11:08 AM   #7
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Alright, I got it working. There is another thread along the same lines. I typed the following into my terminal, set the video mode, and everything worked as it should:

rpm -ivh
yum install kmod-fglrx
Old 03-02-2007, 09:25 AM   #8
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I have reinstalled debian 'testing' with the latest kernel 2.6.18 and I now have the maximum resolution 1400x1050 on one of the IBM R40 laptops. Now I have another R40 that is identical to the first and I used the same disk for the install and I can only get 1024x768 and it has the same Radeon Mobility 7500 card. I have compared the xorg.conf files from both machines and it appears to be the same on both. Is there something else I can look at that might give me a better idea of what is missing on the machine that only has 1024x768 resolution?


ati, drivers, mobility, open, radeon, source

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