Hello ^_^
I am a big fan of ATi graphics cards, so I have a lot of them in many computers. I have stumbled upon a weird, uhm, feature of the Catalyst Control Center. I have a Samsung SyncMaster 245B monitor; its native resolution is 1920x1200, but Catalyst says it's only 1600x1200, so if I enable the native 1920x1200 - it only shows the upper-left part of the screen. And, surprisingly enough, there is no button to disable EDID - as it was on Windows! I am running Debian Lenny amd64 with an X1300, so it's Catalyst 9.3 we're talking about. I remember I've had exactly the same problem on Windows also, and there was the "Disable EDID" button, but it just did not work! When I checked it, it just self-unchecked when I pressed Apply or restarted Catalyst (that was a long time ago, I don't remember exactly). I also don't remember whether I was able to do something (like another version of the driver) or even what card and what version of Catalyst did I use, but I did research this feature thoroughly enough and will be happy to provide any information needed.
The system acknowledges the 1920x1200 mode, it's even possible to set it, but the problem is that it only shows a part of the screen if this mode is set. This might be the problem of the monitor, not the graphics card, but there must be a way to disable looking at EDID anyway, The open-source driver works well. It is also possible to start X with the 1920x1200 resolution and it is displayed properly, but when I go to another console (Ctrl-Alt-F1) and then go back to X, if turns out like this. (On the open-source drivers, it works fine.) So the problem only occures if I try to set the 1920x1200 mode under X (I even tried xrandr --size 1920x1200 - it leads to the same result).
I tried the driver available for download from the ati.amd.com site (for X1300 - it's Catalyst 9.3); I also tried the one in the Debian repository, which goes both for DirectX 9 and DirectX 10 cards, and the problem persists; I also tried the 9.12 version of the driver from ati.amd.com, but it failed to install - "no supported cards found". I tried the one from the repository (I don't know how to see its version) on another machine under Debian Lenny x86 and Radeon 9600 AGP, and it was working well; the driver is the same for x86 and x64 systems, so this must be the problem of X1300.
Searching the Internet for the whole night did not help me (maybe I am not good enough at searching though...), but at least helped to figure out this much information about the problem. I wonder if there is a solution for this...
I am a big fan of ATi graphics cards, so I have a lot of them in many computers. I have stumbled upon a weird, uhm, feature of the Catalyst Control Center. I have a Samsung SyncMaster 245B monitor; its native resolution is 1920x1200, but Catalyst says it's only 1600x1200, so if I enable the native 1920x1200 - it only shows the upper-left part of the screen. And, surprisingly enough, there is no button to disable EDID - as it was on Windows! I am running Debian Lenny amd64 with an X1300, so it's Catalyst 9.3 we're talking about. I remember I've had exactly the same problem on Windows also, and there was the "Disable EDID" button, but it just did not work! When I checked it, it just self-unchecked when I pressed Apply or restarted Catalyst (that was a long time ago, I don't remember exactly). I also don't remember whether I was able to do something (like another version of the driver) or even what card and what version of Catalyst did I use, but I did research this feature thoroughly enough and will be happy to provide any information needed.
The system acknowledges the 1920x1200 mode, it's even possible to set it, but the problem is that it only shows a part of the screen if this mode is set. This might be the problem of the monitor, not the graphics card, but there must be a way to disable looking at EDID anyway, The open-source driver works well. It is also possible to start X with the 1920x1200 resolution and it is displayed properly, but when I go to another console (Ctrl-Alt-F1) and then go back to X, if turns out like this. (On the open-source drivers, it works fine.) So the problem only occures if I try to set the 1920x1200 mode under X (I even tried xrandr --size 1920x1200 - it leads to the same result).
I tried the driver available for download from the ati.amd.com site (for X1300 - it's Catalyst 9.3); I also tried the one in the Debian repository, which goes both for DirectX 9 and DirectX 10 cards, and the problem persists; I also tried the 9.12 version of the driver from ati.amd.com, but it failed to install - "no supported cards found". I tried the one from the repository (I don't know how to see its version) on another machine under Debian Lenny x86 and Radeon 9600 AGP, and it was working well; the driver is the same for x86 and x64 systems, so this must be the problem of X1300.
Searching the Internet for the whole night did not help me (maybe I am not good enough at searching though...), but at least helped to figure out this much information about the problem. I wonder if there is a solution for this...
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