b_e_e_k
March 26th, 2019, 09:57 PM
Integrated graphics on a Coffee Lake i3-8100 with a B360 chipset does not recognize the native resolution of my monitor. My LG W3000H has a native resolution of 2560x1600, but only one single resolution (1280x800) is shown by xrandr. The same monitor worked fine on an older Linux build with Nvidia card. Below the 2 attempts at fixes I tried so far, some diagnostic output and specs.
Any ideas how I can get 2560x1600 to work?
Attempt 1: I have added the resolution using xrandr:
sudo xrandr --newmode "2560x1600_60.00" 348.50 2560 2760 3032 3504 1600
1603 1609 1658 -hsync +vsync
sudo xrandr --addmode HDMI-2 "2560x1600_60.00"
but that only grows the logical desktop to the right and down, while displaying only the top left quadrant, without changing the resolution.
Attempt 2: I have tried to update the drivers as outlined here (https://ubuntuforums.org/showthread.php?t=2377324&p=13710326#post13710326), but nothing changes.
$ xrandr
Screen 0: minimum 320 x 200, current 1280 x 800, maximum 8192 x 8192
HDMI-1 disconnected (normal left inverted right x axis y axis)
HDMI-2 connected primary 1280x800+0+0 (normal left inverted right x axis y axis)
641mm x 401mm
1280x800 59.91*
DP-1 disconnected (normal left inverted right x axis y axis)
HDMI-3 disconnected (normal left inverted right x axis y axis)
Note: When using another monitor (Dell 19") on the same system, xrandr displays many resolutions, and i can switch between them.
No obvious errors with the i915 driver:
$ dmesg |grep i915
[ 0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-4.18.0-16-generic root=UUI
D=21424809-547e-4f35-9844-d192dec81d67 ro quiet splash i915.alpha_support=1 vt.h
andoff=1
[ 0.000000] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.18.0-16-generic r
oot=UUID=21424809-547e-4f35-9844-d192dec81d67 ro quiet splash i915.alpha_support
=1 vt.handoff=1
[ 1.158753] i915 0000:00:02.0: vgaarb: changed VGA decodes: olddecodes=io+mem
,decodes=io+mem:owns=io+mem
[ 1.159039] [drm] Finished loading DMC firmware i915/kbl_dmc_ver1_04.bin (v1.
4)
[ 1.433188] [drm] Initialized i915 1.6.0 20180514 for 0000:00:02.0 on minor 0
[ 1.468306] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
[ 2.395296] snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_co
mponent_bind_ops [i915])
Specs:
i3-8100
MoBo MSI B360M Mortar (using the DVI port; DVI port worked on the older Ubuntu build I mentioned above)
inxi -v 1
System: Host: nifty Kernel: 4.18.0-16-generic x86_64 bits: 64
Desktop: Gnome 3.28.3 Distro: Ubuntu 18.04.2 LTS
CPU: Quad core Intel Core i3-8100 (-MCP-) speed/max: 800/3600 MHz
Graphics: Card: Intel 8th Gen Core Processor Gaussian Mixture Model
Display Server: x11 (X.Org 1.20.1 ) driver: i915
Resolution: 1280x800@59.91hz
OpenGL: renderer: Mesa DRI Intel UHD Graphics 630 (Coffeelake 3x8 GT2
)
version: 4.5 Mesa 18.2.2
Drives: HDD Total Size: 1024.2GB (0.8% used)
Info: Processes: 272 Uptime: 22 min Memory: 1277.0/15911.6MB
Client: Shell (bash) inxi: 2.3.56
Any ideas how I can get 2560x1600 to work?
Attempt 1: I have added the resolution using xrandr:
sudo xrandr --newmode "2560x1600_60.00" 348.50 2560 2760 3032 3504 1600
1603 1609 1658 -hsync +vsync
sudo xrandr --addmode HDMI-2 "2560x1600_60.00"
but that only grows the logical desktop to the right and down, while displaying only the top left quadrant, without changing the resolution.
Attempt 2: I have tried to update the drivers as outlined here (https://ubuntuforums.org/showthread.php?t=2377324&p=13710326#post13710326), but nothing changes.
$ xrandr
Screen 0: minimum 320 x 200, current 1280 x 800, maximum 8192 x 8192
HDMI-1 disconnected (normal left inverted right x axis y axis)
HDMI-2 connected primary 1280x800+0+0 (normal left inverted right x axis y axis)
641mm x 401mm
1280x800 59.91*
DP-1 disconnected (normal left inverted right x axis y axis)
HDMI-3 disconnected (normal left inverted right x axis y axis)
Note: When using another monitor (Dell 19") on the same system, xrandr displays many resolutions, and i can switch between them.
No obvious errors with the i915 driver:
$ dmesg |grep i915
[ 0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-4.18.0-16-generic root=UUI
D=21424809-547e-4f35-9844-d192dec81d67 ro quiet splash i915.alpha_support=1 vt.h
andoff=1
[ 0.000000] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.18.0-16-generic r
oot=UUID=21424809-547e-4f35-9844-d192dec81d67 ro quiet splash i915.alpha_support
=1 vt.handoff=1
[ 1.158753] i915 0000:00:02.0: vgaarb: changed VGA decodes: olddecodes=io+mem
,decodes=io+mem:owns=io+mem
[ 1.159039] [drm] Finished loading DMC firmware i915/kbl_dmc_ver1_04.bin (v1.
4)
[ 1.433188] [drm] Initialized i915 1.6.0 20180514 for 0000:00:02.0 on minor 0
[ 1.468306] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
[ 2.395296] snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_co
mponent_bind_ops [i915])
Specs:
i3-8100
MoBo MSI B360M Mortar (using the DVI port; DVI port worked on the older Ubuntu build I mentioned above)
inxi -v 1
System: Host: nifty Kernel: 4.18.0-16-generic x86_64 bits: 64
Desktop: Gnome 3.28.3 Distro: Ubuntu 18.04.2 LTS
CPU: Quad core Intel Core i3-8100 (-MCP-) speed/max: 800/3600 MHz
Graphics: Card: Intel 8th Gen Core Processor Gaussian Mixture Model
Display Server: x11 (X.Org 1.20.1 ) driver: i915
Resolution: 1280x800@59.91hz
OpenGL: renderer: Mesa DRI Intel UHD Graphics 630 (Coffeelake 3x8 GT2
)
version: 4.5 Mesa 18.2.2
Drives: HDD Total Size: 1024.2GB (0.8% used)
Info: Processes: 272 Uptime: 22 min Memory: 1277.0/15911.6MB
Client: Shell (bash) inxi: 2.3.56