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View Full Version : flicker on a monitor, since 4.14.11-200.fc26.x86_64



mario960
7th January 2018, 01:04 PM
Hi

since I updated to 4.14.11-200.fc26.x86_64, I suffer a slight flicker on a monitor, in particular I can notice it on the gray/black areas.
Note, I have dual monitors, connected by DVI and by DisplayPort. Flickering is just on the DisplayPort one.
Going back to 4.14.6-200.fc26.x86_64 improves display (still, it is not perfect)



looking for your advise
thanks greetings
mario

# xrandr -q --verbose
Screen 0: minimum 320 x 200, current 3840 x 1080, maximum 8192 x 8192
XWAYLAND0 connected 1920x1080+1920+0 (0x24) normal (normal left inverted right x axis y axis) 530mm x 300mm
Identifier: 0x21
Timestamp: 75553
Subpixel: unknown
Gamma: 1.0:1.0:1.0
Brightness: 0.0
Clones:
CRTC: 0
CRTCs: 0
Transform: 1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
1920x1080 (0x24) 173.000MHz -HSync +VSync *current +preferred
h: width 1920 start 2048 end 2248 total 2576 skew 0 clock 67.16KHz
v: height 1080 start 1083 end 1088 total 1120 clock 59.96Hz
XWAYLAND1 connected 1920x1080+0+0 (0x24) normal (normal left inverted right x axis y axis) 530mm x 300mm
Identifier: 0x23
Timestamp: 75553
Subpixel: unknown
Gamma: 1.0:1.0:1.0
Brightness: 0.0
Clones:
CRTC: 1
CRTCs: 1
Transform: 1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
1920x1080 (0x24) 173.000MHz -HSync +VSync *current +preferred
h: width 1920 start 2048 end 2248 total 2576 skew 0 clock 67.16KHz
v: height 1080 start 1083 end 1088 total 1120 clock 59.96Hz


# hwinfo --monitor
25: None 00.0: 10002 LCD Monitor
[Created at monitor.125]
Unique ID: ****
Parent ID: ****
Hardware Class: monitor
Model: "EIZO EV2450"
Vendor: ENC "EIZO"
Device: eisa 0x2568 "EV2450"
Serial ID: "****"
Resolution: 720x400@70Hz
Resolution: 640x480@60Hz
Resolution: 800x600@60Hz
Resolution: 1024x768@60Hz
Resolution: 1280x1024@60Hz
Resolution: 1600x900@60Hz
Resolution: 1280x720@60Hz
Resolution: 1920x1080@60Hz
Size: 528x297 mm
Year of Manufacture: 2015
Week of Manufacture: 43
Detailed Timings #0:
Resolution: 1920x1080
Horizontal: 1920 2008 2052 2200 (+88 +132 +280) +hsync
Vertical: 1080 1084 1089 1125 (+4 +9 +45) +vsync
Frequencies: 148.50 MHz, 67.50 kHz, 60.00 Hz
Driver Info #0:
Max. Resolution: 1920x1080
Vert. Sync Range: 59-61 Hz
Hor. Sync Range: 31-68 kHz
Bandwidth: 148 MHz
Config Status: cfg=new, avail=yes, need=no, active=unknown
Attached to: #24 (VGA compatible controller)

26: None 01.0: 10002 LCD Monitor
[Created at monitor.125]
Unique ID: ****
Parent ID: ****
Hardware Class: monitor
Model: "EIZO EV2450"
Vendor: ENC "EIZO"
Device: eisa 0x2530 "EV2450"
Serial ID: "****"
Resolution: 720x400@70Hz
Resolution: 640x480@60Hz
Resolution: 800x600@60Hz
Resolution: 1024x768@60Hz
Resolution: 1280x1024@60Hz
Resolution: 1600x900@60Hz
Resolution: 1280x720@60Hz
Resolution: 1920x1080@60Hz
Size: 528x297 mm
Year of Manufacture: 2015
Week of Manufacture: 43
Detailed Timings #0:
Resolution: 1920x1080
Horizontal: 1920 2008 2052 2200 (+88 +132 +280) +hsync
Vertical: 1080 1084 1089 1125 (+4 +9 +45) +vsync
Frequencies: 148.50 MHz, 67.50 kHz, 60.00 Hz
Driver Info #0:
Max. Resolution: 1920x1080
Vert. Sync Range: 59-61 Hz
Hor. Sync Range: 31-68 kHz
Bandwidth: 148 MHz
Config Status: cfg=new, avail=yes, need=no, active=unknown
Attached to: #24 (VGA compatible controller)