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I have a problem with Conky installed from conky-all package. Here is my config:

conky.config= {
alignment = "top_right",
background = true,
border_inner_margin = 0,
border_width = 0,
top_cpu_separate = true,
default_color = ffffff,
default_outline_color = "000000",
--default_shade_color = "999999",
double_buffer = true,
draw_borders = false,
draw_graph_borders = true,
draw_outline = true,
draw_shades = false,
gap_x = 0,
gap_y = 28,
maximum_width = 222,
minimum_width = 222,
own_window = true,
own_window_hints = "undecorated,below,sticky,skip_taskbar,skip_pager",
own_window_transparent = true,
own_window_argb_visual = true,
own_window_argb_value = 0,
own_window_type = "normal",
own_window_class = "conky",
show_graph_scale = true,
total_run_times = 0,
update_interval = 3,
text_buffer_size = 1024,
use_xft = true,
font = "Nokia Sans S60:size=8",
xftalpha = 1,
lua_load = "~/.conky/qkiz_rings-kde.lua",
lua_draw_hook_post = "main_rings",
};

conky.text = [[
${offset 16}${font OpenLogos:size=20}u ${voffset -7}${font Nokia Sans S60:size=14}Ubuntu Linux ${execi 3600 lsb_release -a | grep "Release" | cut -f 2}${font}
${offset 18}${voffset 5}${font OpenLogos:size=20}t${font}${voffset -8} ${kernel} ${voffset -10}${font Poky:size=15}S${font} ${voffset -3}${machine}
${offset 35}${voffset 5}${font Poky:size=13}w${font} ${voffset -5}${addrs wlp5s0} ${voffset -6}${font Poky:size=13}s${font} ${voffset -4}${uptime}
${font Poky:size=13}P${font} ${voffset -5}${font Nokia Sans S60:size=10}CPU${font} ${voffset -3}${hr}
${voffset 5}Freq:${freq cpu}MHz${alignr}Temp: ${acpitemp}°C
0${offset 50}1${offset 49}2${offset 47}3
${offset 15}${voffset 10}${font Nokia Sans S60:size=8}${cpu cpu0}%${font}
${offset 67}${voffset -13}${font Nokia Sans S60:size=8}${cpu cpu1}%${font}
${offset 119}${voffset -13}${font Nokia Sans S60:size=8}${cpu cpu2}%${font}
${offset 172}${voffset -13}${font Nokia Sans S60:size=8}${cpu cpu3}%${font}
${voffset 19}4${offset 49}5${offset 49}6${offset 47}7
${offset 15}${voffset 10}${font Nokia Sans S60:size=8}${cpu cpu4}%${font}
${offset 67}${voffset -13}${font Nokia Sans S60:size=8}${cpu cpu5}%${font}
${offset 119}${voffset -13}${font Nokia Sans S60:size=8}${cpu cpu6}%${font}
${offset 172}${voffset -13}${font Nokia Sans S60:size=8}${cpu cpu7}%${font}
${voffset 20}${cpugraph cpu0 25,48}${offset 6}${cpugraph cpu1 25,48}${offset 6}${cpugraph cpu2 25,48}${offset 6}${cpugraph cpu3 25,48}
${voffset -5}${cpugraph cpu4 25,48}${offset 6}${cpugraph cpu5 25,48}${offset 6}${cpugraph cpu7 25,48}${offset 6}${cpugraph cpu7 25,48}
Load: ${loadavg}${alignr}Proc: ${running_processes}/${processes}
${font Poky:size=13}M${font}${voffset -5}${font Nokia Sans S60:size=10}MEM${font} ${voffset -3}${hr}
${voffset 7}${font}RAM:${memperc}% Free:${memfree} / ${memmax}
Cache: ${cached} / ${buffers}
Swap: ${swapperc}% ${swap} / ${swapmax}
${memgraph 26,150}${font Nokia Sans S60:size=6}${offset 34}${voffset -21}ram${voffset 8}${offset -13}swp${font}
${voffset 3}${font Poky:size=13}y${font}${voffset -5}${font Nokia Sans S60:size=10}DISK${font} ${voffset -3}${hr}
${font}${voffset 20}${offset 13}${fs_used_perc /}%
${offset 50}${voffset -20}${font}Disk /${alignr}Use:${fs_used /}/${fs_size /}
${offset 50}${voffset 3}Free:${fs_free /}
${voffset 20}${offset 13}${fs_used_perc /home}%
${offset 50}${voffset -20}Disk /home${alignr}Use:${fs_used /home}/${fs_size /home}
${offset 50}${voffset 3}Free:${fs_free /home}${alignr}HDDTemp: ${hddtemp /dev/sda}°C
${font Poky:size=13}w${font}${voffset -7}${font Nokia Sans S60:size=10}NET${font} ${voffset -3}${hr}
${font}${voffset 8}Download:${alignr 0}Upload:
${font Nokia Sans S60:size=7}${downspeedf wlp5s0} kB / ${totaldown wlan0}${alignr}${upspeedf wlp5s0} kB / ${totalup wlan0}
${downspeedgraph wlp5s0 30,105 scale }${alignr}${upspeedgraph wlp5s0 30,105 scale }
${voffset -5}${font Poky:size=13}r${font}${voffset -5}${font Nokia Sans S60:size=10}TOP${font} ${voffset -3}${hr}
${voffset 5}Top CPU${alignr}CPU%   MEM%
${offset 13}1. ${top name 1}${alignr}${top cpu 1}     ${top mem 1}
${offset 13}2. ${top name 2}${alignr}${top cpu 2}     ${top mem 2}
${offset 13}3. ${top name 3}${alignr}${top cpu 3}     ${top mem 3}
${offset 13}4. ${top name 4}${alignr}${top cpu 4}     ${top mem 4}
${offset 13}5. ${top name 5}${alignr}${top cpu 5}     ${top mem 5}
Top MEM${alignr}MEM%
${offset 13}1. ${top_mem name 1}${alignr}${top_mem mem 1}
${offset 13}2. ${top_mem name 2}${alignr}${top_mem mem 2}
${offset 13}3. ${top_mem name 3}${alignr}${top_mem mem 3}
${offset 13}4. ${top_mem name 4}${alignr}${top_mem mem 4}
${offset 13}5. ${top_mem name 5}${alignr}${top_mem mem 5}
Top IO${alignr}IO%   Read   Write
${offset 13}1. ${top_io name 1}${alignr}${top_io io_perc 1}%   ${top_io io_read 1}   ${top_io io_write 1}
${offset 13}2. ${top_io name 2}${alignr}${top_io io_perc 2}%   ${top_io io_read 2}   ${top_io io_write 2}
${offset 13}3. ${top_io name 3}${alignr}${top_io io_perc 3}%   ${top_io io_read 3}   ${top_io io_write 3}
${voffset 0}${font Poky:size=13}n${font}${voffset -5}${font Nokia Sans S60:size=10}LOG${font} ${voffset -3}${hr}
${voffset 5}${execi 10 tail -n8 /var/log/syslog | fold -w52}
]]

The issue appears in Ubuntu 20.10. Flickering appears very often. Conky disappears for 1 second and appears updated on the desktop. This happens all the time and it is not dependent on CPU/disk usage. Setting double_buffer = true doesn't help.

I'm using KDE v5.19.5. (but the same issue happens on Gnome), gfx card is Intel HD Graphics 4600. There are no special settings for Conky in KDE window settings.

1
  • Perhaps it is taking over 3 seconds to create the new display; try increasing the update_interval to, say, 5 seconds.
    – meuh
    Dec 1, 2020 at 13:08

1 Answer 1

2

The problem was last line in config file ${voffset 5}${execi 10 tail -n8 /var/log/syslog | fold -w52}. Every time when /var/log/syslog file changed Conky starts flickering. I made a workaround for this problem by leaving functionality untouched. First I made a script to tail syslog file which is creating a temporary file with few last lines of syslog and wrapping text around.

#!/bin/bash
while true
do
    tail -n8 /var/log/syslog | fold -w52 > ~/.conky_syslog_workaround.log
    sleep 10
done

The script is starting on logging in. Then I removed the mentioned line in config file with a new one.

${voffset 5}${tail ~/.conky_syslog_workaround.log 20 10}

Now working fine without flickering (which starts happening in Ubuntu 20.10).

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