picom 9.1 - X error 8 MATCH request 139 minor 4

[pclinuxer]

Hello:

Platform

OS: Devuan GNU/Linux 5 (daedalus) x86_64 DE: Xfce 4.18 WM: Xfwm4

GPU, drivers, and screen setup

GPU: 2X NVIDIA Quadro FX 580 Driver: xserver-xorg-video-nouveau 1:1.0.17-2 amd64 Compositor: picom 9.1 Monitors: 3 monitors in Xinerama configuration

~$ glxinfo -B
name of display: :0.0
display: :0  screen: 0
direct rendering: Yes
Extended renderer info (GLX_MESA_query_renderer):
    Vendor: nouveau (0x10de)
    Device: NV96 (0x659)
    Version: 22.3.6
    Accelerated: yes
    Video memory: 491MB
    Unified memory: no
    Preferred profile: core (0x1)
    Max core profile version: 3.3
    Max compat profile version: 3.3
    Max GLES1 profile version: 1.1
    Max GLES[23] profile version: 3.0
Memory info (GL_ATI_meminfo):
    VBO free memory - total: 393 MB, largest block: 393 MB
    VBO free aux. memory - total: 838856 MB, largest block: 838856 MB
    Texture free memory - total: 393 MB, largest block: 393 MB
    Texture free aux. memory - total: 838856 MB, largest block: 838856 MB
    Renderbuffer free memory - total: 393 MB, largest block: 393 MB
    Renderbuffer free aux. memory - total: 838856 MB, largest block: 838856 MB
Memory info (GL_NVX_gpu_memory_info):
    Dedicated video memory: 491 MB
    Total available memory: 1049062 MB
    Currently available dedicated video memory: 393 MB
OpenGL vendor string: nouveau
OpenGL renderer string: NV96
OpenGL core profile version string: 3.3 (Core Profile) Mesa 22.3.6
OpenGL core profile shading language version string: 3.30
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile

OpenGL version string: 3.3 (Compatibility Profile) Mesa 22.3.6
OpenGL shading language version string: 3.30
OpenGL context flags: (none)
OpenGL profile mask: compatibility profile

OpenGL ES profile version string: OpenGL ES 3.0 Mesa 22.3.6
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.00
~$ 

picom version

~$ picom --version
v9.1
~$ 

~$ picom --diagnostic
**Version:** v9.1
### Extensions:
* Shape: Yes
* XRandR: Yes
* Present: Present
### Misc:
* Use Overlay: Yes
* Config file used: /home/groucho/.config/picom/picom.conf
### Drivers (inaccurate):
modesetting
### Backend: glx
* Driver vendors:
 * GLX: Mesa Project and SGI
 * GL: nouveau
* GL renderer: NV96
* Accelerated: 1
~$ 

$ cat /home/user/.config/picom/picom.conf
#################################
#             Shadows           #
#################################

# Enabled client-side shadows on windows. Note desktop windows
# (windows with '_NET_WM_WINDOW_TYPE_DESKTOP') never get shadow,
# unless explicitly requested using the wintypes option.
shadow = false;
# shadow = true;

# The blur radius for shadows, in pixels. (defaults to 12)
# shadow-radius = 12
# shadow-radius = 7;

# The opacity of shadows. (0.0 - 1.0, defaults to 0.75)
# shadow-opacity = .75

# The left offset for shadows, in pixels. (defaults to -15)
# shadow-offset-x = -15
# shadow-offset-x = -7;

# The top offset for shadows, in pixels. (defaults to -15)
# shadow-offset-y = -15
# shadow-offset-y = -7;

# Red color value of shadow (0.0 - 1.0, defaults to 0).
# shadow-red = 0

# Green color value of shadow (0.0 - 1.0, defaults to 0).
# shadow-green = 0

# Blue color value of shadow (0.0 - 1.0, defaults to 0).
# shadow-blue = 0

# Hex string color value of shadow (#000000 - #FFFFFF, defaults to #000000). This option will override options set shadow-(red/green/blue)
# shadow-color = "#000000"

# Specify a list of conditions of windows that should have no shadow.
#
# examples:
#   shadow-exclude = "n:e:Notification";
#
# shadow-exclude = []
shadow-exclude = [
  "name = 'Notification'",
  "class_g = 'Conky'",
  "class_g ?= 'Notify-osd'",
  "class_g = 'Cairo-clock'",
  "_GTK_FRAME_EXTENTS@:c"
];

# Specify a list of conditions of windows that should have no shadow painted over, such as a dock window.
# clip-shadow-above = []

# Specify a X geometry that describes the region in which shadow should not
# be painted in, such as a dock window region. Use
#    shadow-exclude-reg = "x10+0+0"
# for example, if the 10 pixels on the bottom of the screen should not have shadows painted on.
#
# shadow-exclude-reg = ""

# Crop shadow of a window fully on a particular Xinerama screen to the screen.
# xinerama-shadow-crop = false

#################################
#           Fading              #
#################################

# Fade windows in/out when opening/closing and when opacity changes,
#  unless no-fading-openclose is used.
fading = false;
# fading = true;

# Opacity change between steps while fading in. (0.01 - 1.0, defaults to 0.028)
# fade-in-step = 0.028
# fade-in-step = 0.03;

# Opacity change between steps while fading out. (0.01 - 1.0, defaults to 0.03)
# fade-out-step = 0.03
# fade-out-step = 0.03;

# The time between steps in fade step, in milliseconds. (> 0, defaults to 10)
# fade-delta = 10

# Specify a list of conditions of windows that should not be faded.
# fade-exclude = []

# Do not fade on window open/close.
# no-fading-openclose = false

# Do not fade destroyed ARGB windows with WM frame. Workaround of bugs in Openbox, Fluxbox, etc.
# no-fading-destroyed-argb = false

#################################
#   Transparency / Opacity      #
#################################

# Opacity of inactive windows. (0.1 - 1.0, defaults to 1.0)
inactive-opacity = 1.0;
# inactive-opacity = 0.8;

# Opacity of window titlebars and borders. (0.1 - 1.0, disabled by default)
# frame-opacity = 1.0
# frame-opacity = 0.7;

# Let inactive opacity set by -i override the '_NET_WM_WINDOW_OPACITY' values of windows.
# inactive-opacity-override = true
inactive-opacity-override = false;

# Default opacity for active windows. (0.0 - 1.0, defaults to 1.0)
active-opacity = 1.0;

# Dim inactive windows. (0.0 - 1.0, defaults to 0.0)
# inactive-dim = 0.0

# Specify a list of conditions of windows that should never be considered focused.
# focus-exclude = []
focus-exclude = [ "class_g = 'Cairo-clock'" ];

# Use fixed inactive dim value, instead of adjusting according to window opacity.
# inactive-dim-fixed = 1.0

# Specify a list of opacity rules, in the format `PERCENT:PATTERN`,
# like `50:name *= "Firefox"`. picom-trans is recommended over this.
# Note we don't make any guarantee about possible conflicts with other
# programs that set '_NET_WM_WINDOW_OPACITY' on frame or client windows.
# example:
#    opacity-rule = [ "80:class_g = 'URxvt'" ];
#
# opacity-rule = []

#################################
#           Corners             #
#################################

# Sets the radius of rounded window corners. When > 0, the compositor will
# round the corners of windows. Does not interact well with
# `transparent-clipping`.
corner-radius = 0;

# Exclude conditions for rounded corners.
rounded-corners-exclude = [
  "window_type = 'dock'",
  "window_type = 'desktop'"
];

#################################
#     Background-Blurring       #
#################################

# Parameters for background blurring, see the *BLUR* section for more information.
# blur-method =
# blur-size = 12
#
# blur-deviation = false
#
# blur-strength = 5

# Blur background of semi-transparent / ARGB windows.
# Bad in performance, with driver-dependent behavior.
# The name of the switch may change without prior notifications.
#
# blur-background = false

# Blur background of windows when the window frame is not opaque.
# Implies:
#    blur-background
# Bad in performance, with driver-dependent behavior. The name may change.
#
# blur-background-frame = false

# Use fixed blur strength rather than adjusting according to window opacity.
# blur-background-fixed = false

# Specify the blur convolution kernel, with the following format:
# example:
#   blur-kern = "5,5,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1";
#
# blur-kern = ""
# blur-kern = "3x3box";

# Exclude conditions for background blur.
# blur-background-exclude = []
blur-background-exclude = [
  "window_type = 'dock'",
  "window_type = 'desktop'",
  "_GTK_FRAME_EXTENTS@:c"
];

#################################
#       General Settings        #
#################################

# Daemonize process. Fork to background after initialization. Causes issues with certain (badly-written) drivers.
# daemon = false
daemon = true;

# Specify the backend to use: `xrender`, `glx`, or `xr_glx_hybrid`.
# `xrender` is the default one.
#
# backend = "glx";
backend = "xrender";

# Enable/disable VSync.
# vsync = false
vsync = true;

# Enable remote control via D-Bus. See the *D-BUS API* section below for more details.
# dbus = false

# Try to detect WM windows (a non-override-redirect window with no
# child that has 'WM_STATE') and mark them as active.
#
# mark-wmwin-focused = false
mark-wmwin-focused = true;

# Mark override-redirect windows that doesn't have a child window with 'WM_STATE' focused.
# mark-ovredir-focused = false
mark-ovredir-focused = true;

# Try to detect windows with rounded corners and don't consider them
# shaped windows. The accuracy is not very high, unfortunately.
#
# detect-rounded-corners = false
detect-rounded-corners = true;

# Detect '_NET_WM_WINDOW_OPACITY' on client windows, useful for window managers
# not passing '_NET_WM_WINDOW_OPACITY' of client windows to frame windows.
#
# detect-client-opacity = false
detect-client-opacity = true;

# Use EWMH '_NET_ACTIVE_WINDOW' to determine currently focused window,
# rather than listening to 'FocusIn'/'FocusOut' event. Might have more accuracy,
# provided that the WM supports it.
#
# use-ewmh-active-win = false

# Unredirect all windows if a full-screen opaque window is detected,
# to maximize performance for full-screen windows. Known to cause flickering
# when redirecting/unredirecting windows.
#
# unredir-if-possible = false

# Delay before unredirecting the window, in milliseconds. Defaults to 0.
# unredir-if-possible-delay = 0

# Conditions of windows that shouldn't be considered full-screen for unredirecting screen.
# unredir-if-possible-exclude = []

# Use 'WM_TRANSIENT_FOR' to group windows, and consider windows
# in the same group focused at the same time.
#
# detect-transient = false
detect-transient = true;

# Use 'WM_CLIENT_LEADER' to group windows, and consider windows in the same
# group focused at the same time. This usually means windows from the same application
# will be considered focused or unfocused at the same time.
# 'WM_TRANSIENT_FOR' has higher priority if detect-transient is enabled, too.
#
# detect-client-leader = false

# Resize damaged region by a specific number of pixels.
# A positive value enlarges it while a negative one shrinks it.
# If the value is positive, those additional pixels will not be actually painted
# to screen, only used in blur calculation, and such. (Due to technical limitations,
# with use-damage, those pixels will still be incorrectly painted to screen.)
# Primarily used to fix the line corruption issues of blur,
# in which case you should use the blur radius value here
# (e.g. with a 3x3 kernel, you should use `--resize-damage 1`,
# with a 5x5 one you use `--resize-damage 2`, and so on).
# May or may not work with *--glx-no-stencil*. Shrinking doesn't function correctly.
#
# resize-damage = 1

# Specify a list of conditions of windows that should be painted with inverted color.
# Resource-hogging, and is not well tested.
#
# invert-color-include = []

# GLX backend: Avoid using stencil buffer, useful if you don't have a stencil buffer.
# Might cause incorrect opacity when rendering transparent content (but never
# practically happened) and may not work with blur-background.
# My tests show a 15% performance boost. Recommended.
#
glx-no-stencil = false;

# GLX backend: Avoid rebinding pixmap on window damage.
# Probably could improve performance on rapid window content changes,
# but is known to break things on some drivers (LLVMpipe, xf86-video-intel, etc.).
# Recommended if it works.
#
glx-no-rebind-pixmap = false;

# Disable the use of damage information.
# This cause the whole screen to be redrawn everytime, instead of the part of the screen
# has actually changed. Potentially degrades the performance, but might fix some artifacts.
# The opposing option is use-damage
#
# no-use-damage = false
use-damage = true;

# Use X Sync fence to sync clients' draw calls, to make sure all draw
# calls are finished before picom starts drawing. Needed on nvidia-drivers
# with GLX backend for some users.
#
# xrender-sync-fence = false

# GLX backend: Use specified GLSL fragment shader for rendering window contents.
# See `compton-default-fshader-win.glsl` and `compton-fake-transparency-fshader-win.glsl`
# in the source tree for examples.
#
# glx-fshader-win = ""

# Force all windows to be painted with blending. Useful if you
# have a glx-fshader-win that could turn opaque pixels transparent.
#
# force-win-blend = false

# Do not use EWMH to detect fullscreen windows.
# Reverts to checking if a window is fullscreen based only on its size and coordinates.
#
# no-ewmh-fullscreen = false

# Dimming bright windows so their brightness doesn't exceed this set value.
# Brightness of a window is estimated by averaging all pixels in the window,
# so this could comes with a performance hit.
# Setting this to 1.0 disables this behaviour. Requires --use-damage to be disabled. (default: 1.0)
#
# max-brightness = 1.0

# Make transparent windows clip other windows like non-transparent windows do,
# instead of blending on top of them.
#
# transparent-clipping = false

# Set the log level. Possible values are:
#  "trace", "debug", "info", "warn", "error"
# in increasing level of importance. Case doesn't matter.
# If using the "TRACE" log level, it's better to log into a file
# using *--log-file*, since it can generate a huge stream of logs.
#
# log-level = "debug"
log-level = "warn";

# Set the log file.
# If *--log-file* is never specified, logs will be written to stderr.
# Otherwise, logs will to written to the given file, though some of the early
# logs might still be written to the stderr.
# When setting this option from the config file, it is recommended to use an absolute path.
#
# log-file = "/path/to/your/log/file"

# Show all X errors (for debugging)
# show-all-xerrors = false

# Write process ID to a file.
# write-pid-path = "/path/to/your/log/file"

# Window type settings
#
# 'WINDOW_TYPE' is one of the 15 window types defined in EWMH standard:
#     "unknown", "desktop", "dock", "toolbar", "menu", "utility",
#     "splash", "dialog", "normal", "dropdown_menu", "popup_menu",
#     "tooltip", "notification", "combo", and "dnd".
#
# Following per window-type options are available: ::
#
#   fade, shadow:::
#     Controls window-type-specific shadow and fade settings.
#
#   opacity:::
#     Controls default opacity of the window type.
#
#   focus:::
#     Controls whether the window of this type is to be always considered focused.
#     (By default, all window types except "normal" and "dialog" has this on.)
#
#   full-shadow:::
#     Controls whether shadow is drawn under the parts of the window that you
#     normally won't be able to see. Useful when the window has parts of it
#     transparent, and you want shadows in those areas.
#
#   clip-shadow-above:::
#     Controls wether shadows that would have been drawn above the window should
#     be clipped. Useful for dock windows that should have no shadow painted on top.
#
#   redir-ignore:::
#     Controls whether this type of windows should cause screen to become
#     redirected again after been unredirected. If you have unredir-if-possible
#     set, and doesn't want certain window to cause unnecessary screen redirection,
#     you can set this to `true`.
#
wintypes:
{
  tooltip = { fade = false; shadow = false; opacity = 1.00; focus = true; full-shadow = false; };
  dock = { shadow = false; clip-shadow-above = true; }
  dnd = { shadow = false; }
  popup_menu = { opacity = 1.0; }
  dropdown_menu = { opacity = 1.0; }
};
~$ 

Steps of reproduction

Current Behavior

1. open terminal

   ~$ picom
   [ 06/14/24 08:51:17.240 x_create_picture_with_pictfmt_and_pixmap ERROR ] failed to create picture (X error 8 MATCH request 139 minor 4 serial 2498)

   Picom does not crash. But there is very noticeable tearing when resizing any window in any monitor, also when moving albeit less .

Expected behavior

No ERROR printout in terminal No tearing when resizing.

Notwithstanding, opening a window produces a number of Xlib errors in the terminal after the above error:

~$ picom
[ 06/14/24 08:51:17.240 x_create_picture_with_pictfmt_and_pixmap ERROR ] failed to create picture (X error 8 MATCH request 139 minor 4 serial 2498)
lib: ignoring invalid extension event 161
Xlib: ignoring invalid extension event 161
Xlib: ignoring invalid extension event 161
--- snip ---

Please let me know if you need anything else/more information.

Thanks in advance.

PCL

[yshui]

picom 9.1 is really old, can you try a newer version?

[pclinuxer]

Hello:

picom 9.1 is really old ... Well ... It is the version available both in Debian and Devuan repositories for the respective Bookworm/Daedalus releases. https://packages.debian.org/bookworm/picom https://pkginfo.devuan.org/cgi-bin/package-query.html?c=package&q=picom=9.1-1

That said, there is a newer version available for Devuan Ceres (unstable) 10.2-3+b1: https://pkginfo.devuan.org/cgi-bin/package-query.html?c=package&q=picom=10.2-3+b1 But I don't know if the depencencies will hold ... 8^|

You may want to consider contacting the maintainer Nikos Tsipinakis nikos@tsipinakis.com and see if you can get them to push the latest available version into the Debian Bookworm repository.

If you can get that done, it will end up in the Devuan Daedalus repository within days. Of course, I am quite willing to run any tests on my system if you can provide me with the binary.

Thanks in advance,

Best,

PCL

[yshui]

you can try building picom from git, it should build without problem on bookworm.

also can you try the glx backend?

[pclinuxer]

Hello:

... try building picom from git ... I'm afraid you are overestimating my capabilities. I would have no idea where to start with that.

... try the glx backend? I had already tried that, doing it again now to verify.

Changing the backend entry in picom.conf to glx gets me the same error. ie: X error 8 MATCH request 139 minor 4 when starting picom from a terminal.

~$ picom
[ 06/20/24 17:57:22.138 x_create_picture_with_pictfmt_and_pixmap ERROR ] failed to create picture (X error 8 MATCH request 139 minor 4 serial 2333)
Xlib: ignoring invalid extension event 161
Xlib: ignoring invalid extension event 161
--- snip ---

Let me know if there is any other test I can run for you.

Thanks in advance,

PCL

[yshui]

hmm, can you try passing the --experimental-backends option to picom on command line?

[pclinuxer]

Hello:

... try passing the --experimental-backends option to picom on command line? Sure ...

~$ picom --experimental-backends
[ 06/21/24 10:13:39.545 x_create_picture_with_pictfmt_and_pixmap ERROR ] failed to create picture (X error 8 MATCH request 139 minor 4 serial 2524)
[ 06/21/24 10:13:39.548 root_damaged ERROR ] Failed to bind root back pixmap
Xlib: ignoring invalid extension event 161
Xlib: ignoring invalid extension event 161
Xlib: ignoring invalid extension event 146
Xlib: ignoring invalid extension event 146
Xlib: ignoring invalid extension event 161
Xlib: ignoring invalid extension event 161
--- snip ---

One thing I found out about today is that if I start picom from the command line with -b (to run as daemon*) I do not get any errors:

~$ picom -b
~$ 

• which is how I start picom with at boot time, via Xfce's Session and Startup.

Thanks in advance.

Best,

PCL

[yshui]

Sure ...

Do you still have tearing with --experimental-backends? Also try the glx backend with --experimental-backends.

---

I think there are two problems here. the ERROR message you got most likely is related to root window pixmap, which should have been fixed in newer version of picom.

If the tearing problem does not go away with glx and --experimental-backends, then your GPU driver does not support vsync correctly, which won't be something we can fix on our side.

Try learning how to build picom from git, instructions are listed in the README. And also try poking your distro's developers, ask them to update picom in their repos. 9.1 is quite old at this point.