Conky-lua errors

Question

I am receiving the following error after installing conky-lua from AUR:
Conky: llua_do_call: function conky_main execution failed: attempt to call a nil value
Conky: llua_do_call: function conky_main execution failed: attempt to call a nil value
Conky: llua_do_call: function conky_main execution failed: attempt to call a nil value
Conky: llua_do_call: function conky_main execution failed: attempt to call a nil value
Conky: llua_do_call: function conky_main execution failed: attempt to call a nil value
Conky: llua_do_call: function conky_main execution failed: attempt to call a nil value
Conky: llua_do_call: function conky_main execution failed: attempt to call a nil value
Conky: llua_do_call: function conky_main execution failed: attempt to call a nil value
Conky: llua_do_call: function conky_main execution failed: attempt to call a nil value
Conky: llua_do_call: function conky_main execution failed: attempt to call a nil value
Conky: llua_do_call: function conky_main execution failed: attempt to call a nil value
Conky: llua_do_call: function conky_main execution failed: attempt to call a nil value
Conky: llua_do_call: function conky_main execution failed: attempt to call a nil value
Here is what my conky looks like:
Conky error
And here are the text files:
conkyrc-blue
background yes
update_interval 1
cpu_avg_samples 2
net_avg_samples 2
temperature_unit celsius
double_buffer yes
no_buffers yes
text_buffer_size 2048
gap_x 10
gap_y 240
minimum_size 210 450
maximum_width 210
own_window yes
own_window_type normal
own_window_transparent yes
own_window_hints undecorate,below,sticky,skip_taskbar,skip_pager
border_inner_margin 0
border_outer_margin 0
alignment tr
draw_shades no
draw_outline no
draw_borders no
draw_graph_borders no
override_utf8_locale yes
use_xft yes
xftfont Dejavu Sans:size=8
xftalpha 0.5
uppercase no
default_color 1994D1
color1 DDDDDD
color2 AAAAAA
color3 888888
color4 666666
lua_load /home/terry/.conky/conky_grey.lua
lua_draw_hook_post main
TEXT
${voffset 35}
${goto 95}${color4}${font Dejavu Sans:size=22}${time %e}${color1}${offset -50}${font Dejavu Sans:size=10}${time %A}
${goto 85}${color2}${voffset -2}${font Dejavu Sans:size=9}${time %b}${voffset -2} ${color3}${font Dejavu Sans:size=12}${time %Y}${font}
${voffset 80}
${goto 90}${font Dejavu Sans:size=7,weight:bold}${color}CPU$
${goto 90}${font Dejavu Sans:size=7,weight:normal}${color1}${top name 1}${alignr}${top cpu 1}%
${goto 90}${font Dejavu Sans:size=7,weight:normal}${color2}${top name 2}${alignr}${top cpu 2}%
${goto 90}${font Dejavu Sans:size=7,weight:normal}${color3}${top name 3}${alignr}${top cpu 3}%
${goto 90}${cpugraph 10,100 666666 666666}
${goto 90}${voffset -10}${font Dejavu Sans:size=7,weight:normal}${color}${threads} process
${voffset 20}
${goto 90}${font Dejavu Sans:size=7,weight:bold}${color}MEM - ${mem}
${goto 90}${font Dejavu Sans:size=7,weight:normal}${color1}${top_mem name 1}${alignr}${top_mem mem 1}%
${goto 90}${font Dejavu Sans:size=7,weight:normal}${color2}${top_mem name 2}${alignr}${top_mem mem 2}%
${goto 90}${font Dejavu Sans:size=7,weight:normal}${color3}${top_mem name 3}${alignr}${top_mem mem 3}%
${voffset 15}
${goto 90}${font Dejavu Sans:size=7,weight:bold}${color}DISKS
${goto 90}${diskiograph 30,100 666666 666666}${voffset -30}
${goto 90}${font Dejavu Sans:size=7,weight:normal}${color}used: ${fs_used /home/terry} /home/terry
${goto 90}${font Dejavu Sans:size=7,weight:normal}${color}used: ${fs_used /} /
${voffset 10}
${goto 70}${font Dejavu Sans:size=18,weight:bold}${color3}NET${alignr}${color2}${font Dejavu Sans:size=7,weight:bold}${color}${if_up wlan0}wifi ${addr wlan0}${endif}
${goto 90}${font Dejavu Sans:size=7,weight:normal}${color1}Up: ${upspeed wlan0}${goto 90}${font}${alignr}${color3}${upspeedgraph wlan0 8,50}
${goto 90}${font Dejavu Sans:size=7,weight:normal}${color1}Down: ${downspeed wlan0}${goto 90}${font}${alignr}${color3}${downspeedgraph wlan0 8,40}
${goto 90}${font Dejavu Sans:size=7,weight:normal}${color1}Total Up: ${totalup wlan0}
${goto 90}${font Dejavu Sans:size=7,weight:normal}${color1}Total Down: ${totaldown wlan0}
conky_grey.lua
==============================================================================
-- conky_grey.lua
-- author : SLK
-- version : v2011011001
-- license : Distributed under the terms of GNU GPL version 2 or later
--==============================================================================
require 'cairo'
-- clock DATA
-- HOURS
clock_h = {
name='time', arg='%H', max_value=12,
x=110, y=80,
graph_radius=53,
graph_thickness=3,
graph_unit_angle=30, graph_unit_thickness=30,
graph_bg_colour=0xffffff, graph_bg_alpha=0.0,
graph_fg_colour=0xFFFFFF, graph_fg_alpha=0.3,
txt_radius=34,
txt_weight=1, txt_size=10.0,
txt_fg_colour=0xFFFFFF, txt_fg_alpha=0.6,
graduation_radius=53,
graduation_thickness=6, graduation_mark_thickness=2,
graduation_unit_angle=30,
graduation_fg_colour=0xFFFFFF, graduation_fg_alpha=0.3,
-- MINUTES
clock_m = {
name='time', arg='%M', max_value=60,
x=110, y=80,
graph_radius=57,
graph_thickness=2,
graph_unit_angle=6, graph_unit_thickness=6,
graph_bg_colour=0xffffff, graph_bg_alpha=0.1,
graph_fg_colour=0xFFFFFF, graph_fg_alpha=0.3,
txt_radius=70,
txt_weight=0, txt_size=9.0,
txt_fg_colour=0xFFFFFF, txt_fg_alpha=0.6,
graduation_radius=57,
graduation_thickness=0, graduation_mark_thickness=2,
graduation_unit_angle=30,
graduation_fg_colour=0xFFFFFF, graduation_fg_alpha=0.3,
-- SECONDS
clock_s = {
name='time', arg='%S', max_value=60,
x=110, y=80,
graph_radius=50,
graph_thickness=2,
graph_unit_angle=6, graph_unit_thickness=2,
graph_bg_colour=0xffffff, graph_bg_alpha=0.0,
graph_fg_colour=0xFFFFFF, graph_fg_alpha=0.2,
txt_radius=40,
txt_weight=0, txt_size=12.0,
txt_fg_colour=0xFFFFFF, txt_fg_alpha=0.3,
graduation_radius=0,
graduation_thickness=0, graduation_mark_thickness=0,
graduation_unit_angle=0,
graduation_fg_colour=0xFFFFFF, graduation_fg_alpha=0.0,
-- gauge DATA
gauge = {
name='cpu', arg='cpu0', max_value=100,
x=85, y=200,
graph_radius=24,
graph_thickness=5,
graph_start_angle=180,
graph_unit_angle=2.7, graph_unit_thickness=2.7,
graph_bg_colour=0xffffff, graph_bg_alpha=0.1,
graph_fg_colour=0xFFFFFF, graph_fg_alpha=0.5,
hand_fg_colour=0xEF5A29, hand_fg_alpha=0.0,
txt_radius=34,
txt_weight=0, txt_size=8.0,
txt_fg_colour=0xFFFFFF, txt_fg_alpha=0.3,
graduation_radius=28,
graduation_thickness=0, graduation_mark_thickness=1,
graduation_unit_angle=27,
graduation_fg_colour=0xFFFFFF, graduation_fg_alpha=0.3,
caption='',
caption_weight=1, caption_size=8.0,
caption_fg_colour=0xFFFFFF, caption_fg_alpha=0.3,
name='cpu', arg='cpu1', max_value=100,
x=85, y=200,
graph_radius=18,
graph_thickness=5,
graph_start_angle=180,
graph_unit_angle=2.7, graph_unit_thickness=2.7,
graph_bg_colour=0xffffff, graph_bg_alpha=0.1,
graph_fg_colour=0xFFFFFF, graph_fg_alpha=0.5,
hand_fg_colour=0xEF5A29, hand_fg_alpha=0.0,
txt_radius=10,
txt_weight=0, txt_size=8.0,
txt_fg_colour=0xFFFFFF, txt_fg_alpha=0.3,
graduation_radius=28,
graduation_thickness=0, graduation_mark_thickness=1,
graduation_unit_angle=27,
graduation_fg_colour=0xFFFFFF, graduation_fg_alpha=0.3,
caption='',
caption_weight=1, caption_size=8.0,
caption_fg_colour=0xFFFFFF, caption_fg_alpha=0.3,
name='memperc', arg='', max_value=100,
x=85, y=300,
graph_radius=24,
graph_thickness=5,
graph_start_angle=180,
graph_unit_angle=2.7, graph_unit_thickness=2.7,
graph_bg_colour=0xffffff, graph_bg_alpha=0.1,
graph_fg_colour=0xFFFFFF, graph_fg_alpha=0.5,
hand_fg_colour=0xEF5A29, hand_fg_alpha=0.0,
txt_radius=10,
txt_weight=0, txt_size=8.0,
txt_fg_colour=0xFFFFFF, txt_fg_alpha=0.3,
graduation_radius=23,
graduation_thickness=8, graduation_mark_thickness=2,
graduation_unit_angle=27,
graduation_fg_colour=0xFFFFFF, graduation_fg_alpha=0.5,
caption='',
caption_weight=1, caption_size=8.0,
caption_fg_colour=0xFFFFFF, caption_fg_alpha=0.3,
name='fs_used_perc', arg='/', max_value=100,
x=85, y=380,
graph_radius=24,
graph_thickness=5,
graph_start_angle=180,
graph_unit_angle=2.7, graph_unit_thickness=2.7,
graph_bg_colour=0xffffff, graph_bg_alpha=0.1,
graph_fg_colour=0xFFFFFF, graph_fg_alpha=0.5,
hand_fg_colour=0xEF5A29, hand_fg_alpha=0.0,
txt_radius=34,
txt_weight=0, txt_size=8.0,
txt_fg_colour=0xFFFFFF, txt_fg_alpha=0.5,
graduation_radius=28,
graduation_thickness=0, graduation_mark_thickness=1,
graduation_unit_angle=27,
graduation_fg_colour=0xFFFFFF, graduation_fg_alpha=0.3,
caption='/',
caption_weight=1, caption_size=8.0,
caption_fg_colour=0xFFFFFF, caption_fg_alpha=0.5,
name='fs_used_perc', arg='/home/terry', max_value=100,
x=85, y=380,
graph_radius=18,
graph_thickness=5,
graph_start_angle=180,
graph_unit_angle=2.7, graph_unit_thickness=2.7,
graph_bg_colour=0xffffff, graph_bg_alpha=0.1,
graph_fg_colour=0xFFFFFF, graph_fg_alpha=0.5,
hand_fg_colour=0xEF5A29, hand_fg_alpha=0.0,
txt_radius=10,
txt_weight=0, txt_size=8.0,
txt_fg_colour=0xFFFFFF, txt_fg_alpha=0.5,
graduation_radius=28,
graduation_thickness=0, graduation_mark_thickness=1,
graduation_unit_angle=27,
graduation_fg_colour=0xFFFFFF, graduation_fg_alpha=0.3,
caption='/data',
caption_weight=1, caption_size=8.0,
caption_fg_colour=0xFFFFFF, caption_fg_alpha=0.5,
-- rgb_to_r_g_b
-- converts color in hexa to decimal
function rgb_to_r_g_b(colour, alpha)
return ((colour / 0x10000) % 0x100) / 255., ((colour / 0x100) % 0x100) / 255., (colour % 0x100) / 255., alpha
end
-- angle_to_position
-- convert degree to rad and rotate (0 degree is top/north)
function angle_to_position(start_angle, current_angle)
local pos = current_angle + start_angle
return ( ( pos * (2 * math.pi / 360) ) - (math.pi / 2) )
end
-- draw_clock_ring
-- displays clock
function draw_clock_ring(display, data, value)
local max_value = data['max_value']
local x, y = data['x'], data['y']
local graph_radius = data['graph_radius']
local graph_thickness, graph_unit_thickness = data['graph_thickness'], data['graph_unit_thickness']
local graph_unit_angle = data['graph_unit_angle']
local graph_bg_colour, graph_bg_alpha = data['graph_bg_colour'], data['graph_bg_alpha']
local graph_fg_colour, graph_fg_alpha = data['graph_fg_colour'], data['graph_fg_alpha']
-- background ring
cairo_arc(display, x, y, graph_radius, 0, 2 * math.pi)
cairo_set_source_rgba(display, rgb_to_r_g_b(graph_bg_colour, graph_bg_alpha))
cairo_set_line_width(display, graph_thickness)
cairo_stroke(display)
-- arc of value
local val = (value % max_value)
local i = 1
while i <= val do
cairo_arc(display, x, y, graph_radius,( ((graph_unit_angle * i) - graph_unit_thickness)*(2*math.pi/360) )-(math.pi/2),((graph_unit_angle * i) * (2*math.pi/360))-(math.pi/2))
cairo_set_source_rgba(display,rgb_to_r_g_b(graph_fg_colour,graph_fg_alpha))
cairo_stroke(display)
i = i + 1
end
local angle = (graph_unit_angle * i) - graph_unit_thickness
-- graduations marks
local graduation_radius = data['graduation_radius']
local graduation_thickness, graduation_mark_thickness = data['graduation_thickness'], data['graduation_mark_thickness']
local graduation_unit_angle = data['graduation_unit_angle']
local graduation_fg_colour, graduation_fg_alpha = data['graduation_fg_colour'], data['graduation_fg_alpha']
if graduation_radius > 0 and graduation_thickness > 0 and graduation_unit_angle > 0 then
local nb_graduation = 360 / graduation_unit_angle
local i = 1
while i <= nb_graduation do
cairo_set_line_width(display, graduation_thickness)
cairo_arc(display, x, y, graduation_radius, (((graduation_unit_angle * i)-(graduation_mark_thickness/2))*(2*math.pi/360))-(math.pi/2),(((graduation_unit_angle * i)+(graduation_mark_thickness/2))*(2*math.pi/360))-(math.pi/2))
cairo_set_source_rgba(display,rgb_to_r_g_b(graduation_fg_colour,graduation_fg_alpha))
cairo_stroke(display)
cairo_set_line_width(display, graph_thickness)
i = i + 1
end
end
-- text
local txt_radius = data['txt_radius']
local txt_weight, txt_size = data['txt_weight'], data['txt_size']
local txt_fg_colour, txt_fg_alpha = data['txt_fg_colour'], data['txt_fg_alpha']
local movex = txt_radius * (math.cos((angle * 2 * math.pi / 360)-(math.pi/2)))
local movey = txt_radius * (math.sin((angle * 2 * math.pi / 360)-(math.pi/2)))
cairo_select_font_face (display, "ubuntu", CAIRO_FONT_SLANT_NORMAL, txt_weight);
cairo_set_font_size (display, txt_size);
cairo_set_source_rgba (display, rgb_to_r_g_b(txt_fg_colour, txt_fg_alpha));
cairo_move_to (display, x + movex - (txt_size / 2), y + movey + 3);
cairo_show_text (display, value);
cairo_stroke (display);
end
-- draw_gauge_ring
-- displays gauges
function draw_gauge_ring(display, data, value)
local max_value = data['max_value']
local x, y = data['x'], data['y']
local graph_radius = data['graph_radius']
local graph_thickness, graph_unit_thickness = data['graph_thickness'], data['graph_unit_thickness']
local graph_start_angle = data['graph_start_angle']
local graph_unit_angle = data['graph_unit_angle']
local graph_bg_colour, graph_bg_alpha = data['graph_bg_colour'], data['graph_bg_alpha']
local graph_fg_colour, graph_fg_alpha = data['graph_fg_colour'], data['graph_fg_alpha']
local hand_fg_colour, hand_fg_alpha = data['hand_fg_colour'], data['hand_fg_alpha']
local graph_end_angle = (max_value * graph_unit_angle) % 360
-- background ring
cairo_arc(display, x, y, graph_radius, angle_to_position(graph_start_angle, 0), angle_to_position(graph_start_angle, graph_end_angle))
cairo_set_source_rgba(display, rgb_to_r_g_b(graph_bg_colour, graph_bg_alpha))
cairo_set_line_width(display, graph_thickness)
cairo_stroke(display)
-- arc of value
local val = value % (max_value + 1)
local start_arc = 0
local stop_arc = 0
local i = 1
while i <= val do
start_arc = (graph_unit_angle * i) - graph_unit_thickness
stop_arc = (graph_unit_angle * i)
cairo_arc(display, x, y, graph_radius, angle_to_position(graph_start_angle, start_arc), angle_to_position(graph_start_angle, stop_arc))
cairo_set_source_rgba(display, rgb_to_r_g_b(graph_fg_colour, graph_fg_alpha))
cairo_stroke(display)
i = i + 1
end
local angle = start_arc
-- hand
start_arc = (graph_unit_angle * val) - (graph_unit_thickness * 2)
stop_arc = (graph_unit_angle * val)
cairo_arc(display, x, y, graph_radius, angle_to_position(graph_start_angle, start_arc), angle_to_position(graph_start_angle, stop_arc))
cairo_set_source_rgba(display, rgb_to_r_g_b(hand_fg_colour, hand_fg_alpha))
cairo_stroke(display)
-- graduations marks
local graduation_radius = data['graduation_radius']
local graduation_thickness, graduation_mark_thickness = data['graduation_thickness'], data['graduation_mark_thickness']
local graduation_unit_angle = data['graduation_unit_angle']
local graduation_fg_colour, graduation_fg_alpha = data['graduation_fg_colour'], data['graduation_fg_alpha']
if graduation_radius > 0 and graduation_thickness > 0 and graduation_unit_angle > 0 then
local nb_graduation = graph_end_angle / graduation_unit_angle
local i = 0
while i < nb_graduation do
cairo_set_line_width(display, graduation_thickness)
start_arc = (graduation_unit_angle * i) - (graduation_mark_thickness / 2)
stop_arc = (graduation_unit_angle * i) + (graduation_mark_thickness / 2)
cairo_arc(display, x, y, graduation_radius, angle_to_position(graph_start_angle, start_arc), angle_to_position(graph_start_angle, stop_arc))
cairo_set_source_rgba(display,rgb_to_r_g_b(graduation_fg_colour,graduation_fg_alpha))
cairo_stroke(display)
cairo_set_line_width(display, graph_thickness)
i = i + 1
end
end
-- text
local txt_radius = data['txt_radius']
local txt_weight, txt_size = data['txt_weight'], data['txt_size']
local txt_fg_colour, txt_fg_alpha = data['txt_fg_colour'], data['txt_fg_alpha']
local movex = txt_radius * math.cos(angle_to_position(graph_start_angle, angle))
local movey = txt_radius * math.sin(angle_to_position(graph_start_angle, angle))
cairo_select_font_face (display, "ubuntu", CAIRO_FONT_SLANT_NORMAL, txt_weight)
cairo_set_font_size (display, txt_size)
cairo_set_source_rgba (display, rgb_to_r_g_b(txt_fg_colour, txt_fg_alpha))
cairo_move_to (display, x + movex - (txt_size / 2), y + movey + 3)
cairo_show_text (display, value)
cairo_stroke (display)
-- caption
local caption = data['caption']
local caption_weight, caption_size = data['caption_weight'], data['caption_size']
local caption_fg_colour, caption_fg_alpha = data['caption_fg_colour'], data['caption_fg_alpha']
local tox = graph_radius * (math.cos((graph_start_angle * 2 * math.pi / 360)-(math.pi/2)))
local toy = graph_radius * (math.sin((graph_start_angle * 2 * math.pi / 360)-(math.pi/2)))
cairo_select_font_face (display, "ubuntu", CAIRO_FONT_SLANT_NORMAL, caption_weight);
cairo_set_font_size (display, caption_size)
cairo_set_source_rgba (display, rgb_to_r_g_b(caption_fg_colour, caption_fg_alpha))
cairo_move_to (display, x + tox + 5, y + toy + 1)
-- bad hack but not enough time !
if graph_start_angle < 105 then
cairo_move_to (display, x + tox - 30, y + toy + 1)
end
cairo_show_text (display, caption)
cairo_stroke (display)
end
-- go_clock_rings
-- loads data and displays clock
function go_clock_rings(display)
local function load_clock_rings(display, data)
local str, value = '', 0
str = string.format('${%s %s}',data['name'], data['arg'])
str = conky_parse(str)
value = tonumber(str)
draw_clock_ring(display, data, value)
end
for i in pairs(clock_h) do
load_clock_rings(display, clock_h[i])
end
for i in pairs(clock_m) do
load_clock_rings(display, clock_m[i])
end
for i in pairs(clock_s) do
load_clock_rings(display, clock_s[i])
end
end
-- go_gauge_rings
-- loads data and displays gauges
function go_gauge_rings(display)
local function load_gauge_rings(display, data)
local str, value = '', 0
str = string.format('${%s %s}',data['name'], data['arg'])
str = conky_parse(str)
value = tonumber(str)
draw_gauge_ring(display, data, value)
end
for i in pairs(gauge) do
load_gauge_rings(display, gauge[i])
end
end
-- MAIN
function conky_main()
if conky_window == nil then
return
end
local cs = cairo_xlib_surface_create(conky_window.display, conky_window.drawable, conky_window.visual, conky_window.width, conky_window.height)
local display = cairo_create(cs)
local updates = conky_parse('${updates}')
update_num = tonumber(updates)
if update_num > 5 then
go_clock_rings(display)
go_gauge_rings(display)
end
end

Answer 1

Sorry, I wanted to put code tags, but I was unaware of the command. I am running conky-lua-nv 1.8.0-1 from the AUR. There also seems to be some issue with the drawing of the rings, as it shows percents but not the graphical rings that go with it. I suspect it has something to do with the lua file. Anyone see any issue?