External HDMI monitor detected but says "No signal" on Fedora 26 Macbook Pro
Hello,
I'm running fedora 26 running on a Macbook pro 2011. I've connected an external monitor via a Mini DisplayPort to HDMI converter that is connected to the laptop. When I start up the laptop, the splash screen shows up on both the laptop and the external screen so I know for sure that the external screen works. However, after booting, it doesn't show any more picture. The HDMI device seems to be detected by xrandr but the screen continues to say "No Signal".
Output of uname:
~ uname -a
Linux localhost.localdomain 4.11.10-300.fc26.x86_64 #1 SMP Wed Jul 12 17:05:39 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
Output of xrandr:
~ xrandr
Screen 0: minimum 320 x 200, current 2720 x 900, maximum 8192 x 8192
LVDS-2 connected primary 1440x900+0+0 (normal left inverted right x axis y axis) 331mm x 207mm
1440x900 59.90*+
1024x768 60.04 60.00
960x720 60.00
928x696 60.05
896x672 60.01
800x600 60.00 60.32 56.25
700x525 59.98
640x512 60.02
640x480 60.00 59.94
512x384 60.00
400x300 60.32 56.34
320x240 60.05
VGA-1 disconnected (normal left inverted right x axis y axis)
HDMI-1 connected 1280x720+1440+0 (normal left inverted right x axis y axis) 1150mm x 648mm
1280x720 60.32*+ 60.00 50.00 50.00 59.94
1920x1080 60.00 50.00 59.94
1920x1080i 60.00 50.00 59.94
2880x576i 50.00
1280x1024 75.02
1024x768 75.03 70.07 60.00
1440x480 60.00 59.94
800x600 72.19 75.00 60.32 56.25
720x576 50.00
720x480 60.00 59.94
720x480i 60.00 59.94
640x480 75.00 72.81 66.67 60.00 59.95 59.94
720x400 70.08
DP-4 disconnected (normal left inverted right x axis y axis)
Output of lspci:
~ lspci
00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09)
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200/2nd Generation Core Processor Family PCI Express Root Port (rev 09)
00:01.1 PCI bridge: Intel Corporation Xeon E3-1200/2nd Generation Core Processor Family PCI Express Root Port (rev 09)
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Universal Host Controller #5 (rev 05)
00:1a.7 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 05)
00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 05)
00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b5)
00:1c.1 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset ...
Does your laptop have two graphics cards? do you EFI boot or legacy mode boot Fedora?
Yes, it's got 2 cards. I legacy boot.