[OpenGL] [HD 7790] - VSYNC always ON in all videogames

Submitted by Vasya

Assigned to Default DRI bug account

Description

Linux 4.13.0-36-generic #40~16.04.1-Ubuntu SMP Fri Feb 16 23:25:58 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Bonaire XT [Radeon HD 7790/8770 / R7 360 / R9 260/360 OEM] (prog-if 00 [VGA controller])
Subsystem: Micro-Star International Co., Ltd. [MSI] Bonaire XT [Radeon HD 7790/8770 / R7 360 / R9 260/360 OEM]
Flags: bus master, fast devsel, latency 0, IRQ 25
Memory at d0000000 (64-bit, prefetchable) [size=256M]
Memory at cf800000 (64-bit, prefetchable) [size=8M]
I/O ports at d000 [size=256]
Memory at f7fc0000 (32-bit, non-prefetchable) [size=256K]
Expansion ROM at 000c0000 [disabled] [size=128K]
Capabilities: [48] Vendor Specific Information: Len=08 >
Capabilities: [50] Power Management version 3
Capabilities: [58] Express Legacy Endpoint, MSI 00
Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 >
Capabilities: [150] Advanced Error Reporting
Capabilities: [270] #19
Capabilities: [2b0] Address Translation Service (ATS)
Capabilities: [2c0] #13
Capabilities: [2d0] #1b
Kernel driver in use: radeon
Kernel modules: radeon, amdgpu

After update linux kernel (> 4.09) VSYNC always(!!!) ON mode in all OpenGL videogames (max < 60 fps). Please, FIX and set correct VSYNC mode.
"vblank_mode=0" is do NOT resolve this problem!