GNOME Bugzilla – Bug 756791
Resolution list different from Wayland to X
Last modified: 2015-10-19 12:54:40 UTC
When starting Gnome-shell with X, I have all the supported resolutions listed in the resolution list. When I'm starting Gnome-shell under Wayland, it only list the native resolution, which is 3840 x 2160 (16:9). I'm used to set the resolution to 1920 x 1080 under X due to scaling problems inside applications (eclipse, Atom,...). I can't set the Wayland session to this resolution.
The resolution listing is implemented in mutter, reassigning.
Please post the output of edid-decode. Something like $ edid-decode /sys/class/drm/.../edid You'll need to fill in '...' with the actual path on your system which depends on your GPU and the output connectors you have.
Thank you, Here is the output of edid-decode : $ edid-decode /sys/class/drm/card0-eDP-1/edid Extracted contents: header: 00 ff ff ff ff ff ff 00 serial number: 4d 10 31 14 00 00 00 00 2c 18 version: 01 04 basic params: a5 23 13 78 0e chroma info: de 50 a3 54 4c 99 26 0f 50 54 established: 00 00 00 standard: 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 descriptor 1: 4d d0 00 a0 f0 70 3e 80 30 20 35 00 5a c2 10 00 00 18 descriptor 2: 4d d0 00 a0 f0 70 68 82 30 20 35 00 00 00 00 00 00 00 descriptor 3: 00 00 00 fe 00 54 59 33 58 43 80 4c 51 31 35 36 44 31 descriptor 4: 00 00 00 00 00 02 01 03 23 00 12 00 00 0b 01 0a 20 20 extensions: 00 checksum: 5f Manufacturer: SHP Model 1431 Serial Number 0 Made week 44 of 2014 EDID version: 1.4 Digital display 8 bits per primary color channel DisplayPort interface Maximum image size: 35 cm x 19 cm Gamma: 2.20 Supported color formats: RGB 4:4:4, YCrCb 4:2:2 Default (sRGB) color space is primary color space First detailed timing is preferred timing Established timings supported: Standard timings supported: Detailed mode: Clock 533.250 MHz, 346 mm x 194 mm 3840 3888 3920 4000 hborder 0 2160 2163 2168 2222 vborder 0 -hsync -vsync Detailed mode: Clock 533.250 MHz, 0 mm x 0 mm 3840 3888 3920 4000 hborder 0 2160 2163 2168 2776 vborder 0 -hsync -vsync analog composite ASCII string: TY3XC Manufacturer-specified data, tag 0 Checksum: 0x5f (valid) EDID block does NOT conform to EDID 1.3! Missing name descriptor Missing monitor ranges Detailed block string not properly terminated I don't know if it can help you but the computer has two graphic card, an integrated Intel and an Nvidia card switched off with Bumblebee.
Your panel reports only one mode so the other modes you see available in X are the standard vesa modes which our native backend doesn't support yet. *** This bug has been marked as a duplicate of bug 744544 ***