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Upgrade to Kernel 3.19. – I used the Ubuntu mainline kernel packages, which can be found here: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.19-vivid/ (runs on Ubuntu 14.04 trusty as well) The following bug report comment mentioned it https://bugs.freedesktop.org/show_bug.cgi?id=45092#c37 ...and tracked down the commit with the following message: ...


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This seems to be a reported bug, check the link that follows. In case of Ubuntu check this link In case of Debian read this other link specially the Fixing corrupted video on resume part In case the problem is in a text console: Have you tried refreshing the fonts cache? fc-cache -f -v


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If a driver is failing to resume a device properly, then I believe the only solution you will find will be in debugging and identifying where the problem is so you can decide what to do from there. For example, I don't see how you can refresh if the video card is not reinitialized. ACPI handles suspend/resume and display. For example, the following ACPI ...


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I had a similar situation with my laptop. The screen would often remain black when it woke from suspend. My solution was to use xrandr to reset my displays. You need to find the xrandr command that sets up your layout and run that. For example, on my system, I had two screens and this set it up as I wanted it: xrandr --output DP-3 --auto --output VGA-0 ...



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