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I have Ubuntu 12.10 32-bit on a dual boot with Windows 7 64-bit and installed updates over the past Friday.

Saturday when I booted up, the login screen had major graphical issues where it looks like almost the entire screen is blocked out with a weird striped screen. I can just barely see my wallpaper at the top and I can log in.

I am running a Radeon HD 6570 video card using ATI's drivers. Since Saturday, I have tried to repair from disc but the issue remained. I tried reinstalling fresh and I get the proper image until I run updates. I've basically tried everything I can think of but the issue always comes back after the latest updates.

As of right now I think my options are to go back to 12.04, try 12.10 64-bit, or try one of the generic proprietary drivers.

I know of the issue involving Radeon, ATI and the blank desktop/no mouse situation but this isn't related to that as I can get it to happen without having Catalyst on the system.

Any insight, help, or shared grieving would be appreciated.

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I am having the same issue here...and have the same OS config....using ATI Radeon HD 6670..I think its a problem with the Graphic card driver...The FGLRX Propripetory driver installer is not working...so I am trying to download the Linux catalyst driver from here...http://support.amd.com/us/gpudownload/linux/Pages/radeon_linux.aspx... Try it out..it might solve the problem...I am still downloading... For the time being i just changed my Graphics preference to internal in my BIOS setup...works fine with only internal...you can do the same till we find a solution..

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I know 13.1 will give you the same issues with Unity and mouse missing so I'm concidering trying the 12.11 beta as it was reported to fix the other graphic issue –  Ralkkai Jan 28 '13 at 15:56
    
@Ralkkai There's no 13.1 or 12.11 version of Ubuntu. Newer-than-stable versions of Ubuntu are off-topic here, as per the FAQ. –  gertvdijk Jan 28 '13 at 16:08
    
I meant for Catalyst. Sorry for not being specific. –  Ralkkai Jan 28 '13 at 16:16
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