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I am in the process of building my next generation of gateway/server. (I think its my 5th or 6th physical box.) I started with version 6.6.0. The install ran part ways and then I encountered the "blank screen" problem. It tried all the checks and possible fixes I could find in the support forums. No success. I then went to the new 7.1 version. Same thing. I was going to try the 6.5 version, but couldn't find the old ISO.
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Any suggestions?
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My new system is based on an AMD A6-7400K processor.
Tuesday, November 03 2015, 09:32 PM
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  • Accepted Answer

    Friday, June 02 2017, 11:42 AM - #Permalink
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    In the past I've had to set a vga option in the grub boot line to give a 1024*768 display to get round the issue (vga=791). 800*600 and 640*480 would probably also work. Some options are here but there are many more if you digest this (try the Linux video mode numbers section).
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    Friday, June 02 2017, 12:35 AM - #Permalink
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    On the few occasions this has been encountered - a text mode install solved the 'blank screen' problem. Also setup the system so tty1 goes to the familiar Linux prompt and not the standard ClearOS login screen with the red square...
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  • Accepted Answer

    Thursday, June 01 2017, 11:01 PM - #Permalink
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    I solved this problem by installing an old video adapter that ClearOS/CentOS supported. For many years Windows has had a "compatibility mode" for video adapters it does not recognize. Since high end video is not needed to run ClearOS, it would be nice if there was a way to cleanly force to a common mode supported by most video subsytems. Just a thought...
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  • Accepted Answer

    Friday, November 06 2015, 07:12 PM - #Permalink
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    Peter, thanks. This is beginning to feel like a lot of work. I found an old video adapter, installed it, then in the BIOS forced the system to use it. ClearOS installed cleanly and is running properly. I contacted AMD this morning and told them their Linux instructions, well, don't work. I'll watch the forums and support websites. Perhaps later a good solid fix will present itself.

    My new system has a solid state disk drive. OMG! This new system is FAST.
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  • Accepted Answer

    Friday, November 06 2015, 06:46 PM - #Permalink
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    I tried to install the AMD drivers. The installer generated a screen full of dependency problems.


    There are several threads regarding installation of the Catalyst drivers in the CentOS forums. Take a look at at this. The last post on page one seems relevant.

    Cheers

    Peter
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  • Accepted Answer

    Friday, November 06 2015, 02:21 PM - #Permalink
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    Thank you Peter. I tried to install the AMD drivers. The installer generated a screen full of dependency problems. There does not seem to be a way to disable or dumb down the on chip video. Maybe the solution is to put in an old, Linux supported video card and force the bios to use it exclusively.
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    I wonder if there is a way to force ClearOS and/or Linux to use an old/safe video mode.
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    I may try to install a new version of another Linux distro to see if it will work, and then what graphics drivers it is using.
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    If anyone has coax'd an AMD Ax-xxxx system into working with ClearOS, please share with us how you did it.
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    I used this family of AMD CPU to build a Windows based Media PC. The on-chip graphics can handle the HD TV encoding quite well. The price/performance of this chip family is quite good.
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  • Accepted Answer

    Friday, November 06 2015, 12:25 AM - #Permalink
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    I guess the issue is lack of drivers for the Radeon graphics unit. I havn't done this myself but suspect getting COS installed and running requires something like the following steps:

    1. Disable the radeon graphics unit in BIOS (I assume that is possible - I don't have an A6 myself)
    2. Install COS
    3. Find and install AMD's latest linux drivers for radeon graphics for RHEL 7.1 (or 6.6 if that is your choice). Its available from AMD here when you hoover over the Drivers+Support tab. Alternatively check with CentOS.
    4. Enable radeon graphics using AMD's Catalyst software.

    You may need to do a bit of experimenting but it should be quite possible.

    EDIT: I forgot to mention that a server doesn't have any use for advanced graphics. So if all you need is a simple server managed from webconfig and occasionally a terminal screen, you might simply drop steps 3 and 4, leaving the radeon unit disabled.

    Cheers

    Peter
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  • Accepted Answer

    Thursday, November 05 2015, 09:47 PM - #Permalink
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    Help! Anyone!

    For fun, I downloaded a few versions of CentOS and did test installations with them. CentOS, the base operating system of ClearOS has problems with my hardware. So this problem is not unique to ClearOS. The new generation of processors are coming with on chip graphics processing cores. The Linux distributions are having a hard time keeping up with the innovative new chips. When I went shopping for a new system almost all of the medium to low end processors available to me had graphics cores. It seems to be the way of the future.

    Now how do I fix my problem and get me new gateway up and running?
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