Doing more testing, and now that I see this "feature" disabled, I don't
think it always turned off the monitor. Looks like half of the time
linux-image-5.4.0-33-generic failed to turn it off, but it still did NOT
hang the entire system like linux-image-5.4.0-37-generic does.
Monitor details
$ sudo get-edid | parse-edid
This is read-edid version 3.0.2. Prepare for some fun.
Attempting to use i2c interface
No EDID on bus 1
No EDID on bus 2
No EDID on bus 3
No EDID on bus 4
No EDID on bus 5
No EDID on bus 6
No EDID on bus 7
No EDID on bus 8
2 potential busses found: 0 9
Will scan through until the first EDID is found.
Pass a bus number as an option to this program to go only for that one.
Bus 0 doesn't really have an EDID...
128-byte EDID successfully retrieved from i2c bus 9
Looks like i2c was successful. Have a good day.
Checksum Correct
Section "Monitor"
Identifier "DELL S2409W"
ModelName "DELL S2409W"
VendorName "DEL"
# Monitor Manufactured week 22 of 2009
# EDID version 1.3
# Digital Display
DisplaySize 530 300
Gamma 2.20
Option "DPMS" "true"
Horizsync 30-83
VertRefresh 50-76
# Maximum pixel clock is 170MHz
#Not giving standard mode: 1152x864, 75Hz
#Not giving standard mode: 1280x1024, 60Hz
#Not giving standard mode: 1920x1080, 60Hz
Modeline "Mode 0" 148.50 1920 2008 2052 2200 1080 1084 1089 1125
+hsync +vsync
EndSection
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https://bugs.launchpad.net/bugs/1883472
Title:
linux-image-5.4.0-37-generic freezes on idle. linux-
image-5.4.0-33-generic works fine.
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