Description of problem: On a Mac Mini server hardware (MCP79 + GeForce 9400) running nouveau, I have a systematic video glitch after screen blanking. A video of the glitch can be seen here: https://www.youtube.com/edit?o=U&video_id=YvbIzmth8dY. The machine is connected through Display Port VGA adapter. Disconnecting and reconnecting makes the display return to normal. My screen complains about the input being out of range, 67.5kHz / 30Hz. That seems suspect. Version-Release number of selected component (if applicable): xorg-x11-drv-nouveau.x86_64 1:1.0.13-1.fc25 @fedora mesa-libwayland-egl.x86_64 13.0.4-2.fc25 @updates mesa-libwayland-egl-devel.x86_64 13.0.4-2.fc25 @updates mesa-dri-drivers.i686 13.0.4-2.fc25 updates How reproducible: Always (after screen blank) Steps to Reproduce: 1. Update with 'dnf update' 2. Wait until screen blank Actual results: Glitches on screen, see YouTube video linked above. Expected results: Stable and smooth video output Additional info: lspci shows: 00:00.0 Host bridge: NVIDIA Corporation MCP79 Host Bridge (rev b1) 00:00.1 RAM memory: NVIDIA Corporation MCP79 Memory Controller (rev b1) 00:03.0 ISA bridge: NVIDIA Corporation MCP79 LPC Bridge (rev b3) 00:03.1 RAM memory: NVIDIA Corporation MCP79 Memory Controller (rev b1) 00:03.2 SMBus: NVIDIA Corporation MCP79 SMBus (rev b1) 00:03.3 RAM memory: NVIDIA Corporation MCP79 Memory Controller (rev b1) 00:03.4 RAM memory: NVIDIA Corporation MCP79 Memory Controller (rev b1) 00:03.5 Co-processor: NVIDIA Corporation MCP79 Co-processor (rev b1) 00:04.0 USB controller: NVIDIA Corporation MCP79 OHCI USB 1.1 Controller (rev b1) 00:04.1 USB controller: NVIDIA Corporation MCP79 EHCI USB 2.0 Controller (rev b1) 00:06.0 USB controller: NVIDIA Corporation MCP79 OHCI USB 1.1 Controller (rev b1) 00:06.1 USB controller: NVIDIA Corporation MCP79 EHCI USB 2.0 Controller (rev b1) 00:08.0 Audio device: NVIDIA Corporation MCP79 High Definition Audio (rev b1) 00:09.0 PCI bridge: NVIDIA Corporation MCP79 PCI Bridge (rev b1) 00:0a.0 Ethernet controller: NVIDIA Corporation MCP79 Ethernet (rev b1) 00:0b.0 SATA controller: NVIDIA Corporation MCP79 AHCI Controller (rev b1) 00:10.0 PCI bridge: NVIDIA Corporation MCP79 PCI Express Bridge (rev b1) 00:15.0 PCI bridge: NVIDIA Corporation MCP79 PCI Express Bridge (rev b1) 00:16.0 PCI bridge: NVIDIA Corporation MCP79 PCI Express Bridge (rev b1) 02:00.0 VGA compatible controller: NVIDIA Corporation C79 [GeForce 9400] (rev b1)
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