Created attachment 1196577 [details] laptop screen Description of problem: Laptop model: Thinkpad T450s Kernel version: kernel-4.6.7-300.fc24.x86_64 Before I updated kernel, everything good. at that time, kernel version is kernel-4.5.5-300.fc24.x86_64 When I updated kernel to kernel-4.6.7-300.fc24.x86_64, if I only use the laptop monitor , it work good. but when I connected a external monitor (my monitor is dell). the external monitor screen will shaking, sometime, the laptop screen will shaking as well. Version-Release number of selected component (if applicable): kernel-4.6.7-300.fc24.x86_64, How reproducible: Steps to Reproduce: 1.make sure use kernel-4.6.7-300.fc24.x86_64 2.connect a external monitor 3. Actual results: Screen shaking Expected results: Additional info:
00:02.0 VGA compatible controller [0300]: Intel Corporation HD Graphics 5500 [8086:1616] (rev 09) (prog-if 00 [VGA controller]) Subsystem: Lenovo Device [17aa:5036] Flags: bus master, fast devsel, latency 0, IRQ 46 Memory at e0000000 (64-bit, non-prefetchable) [size=16M] Memory at c0000000 (64-bit, prefetchable) [size=512M] I/O ports at 3000 [size=64] [virtual] Expansion ROM at 000c0000 [disabled] [size=128K] Capabilities: <access denied> Kernel driver in use: i915 Kernel modules: i915
*** This bug has been marked as a duplicate of bug 1353008 ***