OK - more checks ... in the course of which something reset itself ...
Switching to other accounts and back showed they were unaffected. They still
had the high res options..
Browsing hidden files in home of the affected account (the first user created
and the user first logged on to after updating) looking at those updated
recently revealed nothing of interest.
Right click desktop to change background displayed choices but selecting one
had no effect.
Theme install (never done that before) with my already preferred clearview
still selected was cancelled when it asked for s directory.
Visual effects (currently None) asked for drivers when changed to Normal mode,
then went into a flashing loop when cancelled from not being able to find them.
Eventually stopped - not sure what I did to stop it.
Selected a new background.
New background looked good. Went back to Preferences-Monitor and found the big
list now available ???
e...@lucid-eddy:~$ xrandr --verbose
Screen 0: minimum 320 x 240, current 1280 x 960, maximum 1440 x 1050
default connected 1280x960+0+0 (0x10c) normal (normal) 0mm x 0mm
Identifier: 0x108
Timestamp: 15521392
Subpixel: no subpixels
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:
1400x1050 (0x109) 88.2MHz
h: width 1400 start 0 end 0 total 1400 skew 0 clock 63.0KHz
v: height 1050 start 0 end 0 total 1050 clock 60.0Hz
1280x1024 (0x10a) 78.6MHz
h: width 1280 start 0 end 0 total 1280 skew 0 clock 61.4KHz
v: height 1024 start 0 end 0 total 1024 clock 60.0Hz
1440x900 (0x10b) 77.8MHz
h: width 1440 start 0 end 0 total 1440 skew 0 clock 54.0KHz
v: height 900 start 0 end 0 total 900 clock 60.0Hz
1280x960 (0x10c) 73.7MHz *current
h: width 1280 start 0 end 0 total 1280 skew 0 clock 57.6KHz
v: height 960 start 0 end 0 total 960 clock 60.0Hz
1360x768 (0x10d) 62.7MHz
h: width 1360 start 0 end 0 total 1360 skew 0 clock 46.1KHz
v: height 768 start 0 end 0 total 768 clock 60.0Hz
1152x864 (0x10e) 74.6MHz
h: width 1152 start 0 end 0 total 1152 skew 0 clock 64.8KHz
v: height 864 start 0 end 0 total 864 clock 75.0Hz
1152x864 (0x10f) 69.7MHz
h: width 1152 start 0 end 0 total 1152 skew 0 clock 60.5KHz
v: height 864 start 0 end 0 total 864 clock 70.0Hz
1152x864 (0x110) 59.7MHz
h: width 1152 start 0 end 0 total 1152 skew 0 clock 51.8KHz
v: height 864 start 0 end 0 total 864 clock 60.0Hz
1024x768 (0x111) 59.0MHz
h: width 1024 start 0 end 0 total 1024 skew 0 clock 57.6KHz
v: height 768 start 0 end 0 total 768 clock 75.0Hz
1024x768 (0x112) 55.1MHz
h: width 1024 start 0 end 0 total 1024 skew 0 clock 53.8KHz
v: height 768 start 0 end 0 total 768 clock 70.0Hz
1024x768 (0x113) 47.2MHz
h: width 1024 start 0 end 0 total 1024 skew 0 clock 46.1KHz
v: height 768 start 0 end 0 total 768 clock 60.0Hz
832x624 (0x114) 38.9MHz
h: width 832 start 0 end 0 total 832 skew 0 clock 46.8KHz
v: height 624 start 0 end 0 total 624 clock 75.0Hz
800x600 (0x115) 28.8MHz
h: width 800 start 0 end 0 total 800 skew 0 clock 36.0KHz
v: height 600 start 0 end 0 total 600 clock 60.0Hz
800x600 (0x116) 36.0MHz
h: width 800 start 0 end 0 total 800 skew 0 clock 45.0KHz
v: height 600 start 0 end 0 total 600 clock 75.0Hz
800x600 (0x117) 34.6MHz
h: width 800 start 0 end 0 total 800 skew 0 clock 43.2KHz
v: height 600 start 0 end 0 total 600 clock 72.0Hz
xdpyinfo includes:
screen #0:
dimensions: 1280x960 pixels (10x10 millimeters)
resolution: 3251x2438 dots per inch
depths (7): 24, 1, 4, 8, 15, 16, 32
root window id: 0x102
depth of root window: 24 planes
number of colormaps: minimum 1, maximum 1
default colormap: 0x20
default number of colormap cells: 256
preallocated pixels: black 0, white 16777215
options: backing-store NO, save-unders NO
largest cursor: 64x64
current input event mask: 0xfa8033
KeyPressMask KeyReleaseMask EnterWindowMask
LeaveWindowMask ExposureMask StructureNotifyMask
SubstructureNotifyMask SubstructureRedirectMask FocusChangeMask
PropertyChangeMask ColormapChangeMask
number of visuals: 64
(definitely something wrong there!)
Latest logs uploaded in case they help. When it happens (which is
often enough to be really irritating) this bug is a real turn-off for
any user who is not totally committed to Ubuntu. It is particularly
difficult for Windows users to understand - because it never happens to
them!
FWIW I suspect it is hardware dependent (a suspicion, not a conviction)
- possibly a video card issue. Part of the reason I use an old-
fashioned 'synch-to-almost-anything' CRT monitor.
--
Reduced screen resolution choices after update
https://bugs.launchpad.net/bugs/620581
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