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Screen flashing black on some applications with 4K display

Hi, i recently bought my new laptop DELL Inspiron 15 7548 and installed fedora 22. I'm facing problems with many linux distribution that doesn't work with hidpi scaling (my display is 4K with 3840x2160 resolution), but fedora solve it very well.

It's still an issue the intermittent black screen while surfing in internet with Firefox or Google Chrome. I also found the same bug in Ubuntu:, and in Gnome desktop: So

display blinks right after Chrome [or Firefox] opened, back to normal when you close the browser

#  lspci -k | grep -A3 VGA


00:02.0 VGA compatible controller: Intel Corporation Broadwell-U Integrated Graphics (rev 09)
    DeviceName:  Onboard IGD
    Subsystem: Dell Device 066f
    Kernel driver in use: i915
08:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Opal XT [Radeon R7 M265] (rev ff)
    Kernel driver in use: radeon
    Kernel modules: radeon

I tried these fixes

  • Installing the Proprietary AMD Catalyst 14.12 FAILED [source: ]
  • Passing the option i915.enable_ips=0 to kernel upon boot, i.e. append this line in GRUB_CMDLINE_LINUX on /etc/default/grub FAILED

I hope your answers will help 4K's customers. Thanks for your replies