Re: Fedora 30 and problem with monitor resolution detection in gdm/Gnome?

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On 6/2/19 3:05 AM, Barry Scott wrote:
On 1 Jun 2019, at 19:47, Samuel Sieb <samuel@xxxxxxxx> wrote:
# find /sys/devices -name 'edid'
/sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-HDMI-A-1/edid
/sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-VGA-1/edid
/sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-LVDS-1/edid
/sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-DP-1/edid

I always seem to have 0 length files in /sys for edid.
That why I use the xrandr output.

Files in /sys are not real files and they usually (always?) appear as 0 length.

# edid-decode < /sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-LVDS-1/edid
Extracted contents:
[...snip...]
Standard timings supported:
Detailed mode: Clock 69.300 MHz, 261 mm x 163 mm
               1280 1306 1328 1418 hborder 0
                800  802  804  814 vborder 0
               -hsync -vsync
               VertFreq: 60 Hz, HorFreq: 48871 Hz
[...snip...]
Checksum: 0x2 (valid)
EDID block does NOT conform to EDID 1.4!
	Missing name descriptor
	Missing monitor ranges

That's the problem - bad EDID.

I'm not the one having a problem. That's just the end of the output so I left it in.
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