FGLRX display issue

I want to использовал the proprietary fglrx драйвер from AMD, but the display reacts like this:

• Picture is 10px thick on top of the screen, width нормальный
• The курсор шоу normally
• Works normally only after removing драйвер (apt-get purge "fglrx*")

I tried with GDM and lightDM, they react the same.

Also, using the open-source AMD драйвер, I just cannot использовал my AMD graphics card with vga_switcheroo by echo DDIS > switch even though vgaswitcheroo exists. The screen simply turns black and I cannot return to я утешил with Ctrl+Alt+F1

Specs:

AMD Radeon R5 M230 hybrid with Intel Graphics

Intel Core i5-6400 with 16G ОЗУ

1920x1080 HDMI display

HP 550-108nf - unchanged motherboard/config/BIOS

Kubuntu 14.04 LTS "Трусти Тар" with Linux 3.19.0-33 generic