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EDIT 29/07/2025: My bad, it works out of the box, I should have not overriden CLIENTCMD environment variable. The steam command line option -steamdeck is required in order to show the 4 different levels of performance details (included in the default CLIENTCMD value). Then, with a DualShock 4 Controller, in game, I just have to press PS button + X and the performance overlay appears at the right of the screen. This is so cool.

Hi!

Anyone knows how to enable mangohud in a dedicated gamescope session with this package? Some environment variables to set in ~/.config/environment.d/gamescope-session-plus.conf?

Or any working ways to display a performance overlay?

Thanks.

@jSQrD

You need to use "gamescope-session-plus steam".

Best of luck!

~ 
❯ gamescope-session-plus
Failed to start gamescope-session-plus@.service: Unit name gamescope-session-plus@.service is missing the instance name.
See user logs and 'systemctl --user status gamescope-session-plus@.service' for details.
~
❯ systemctl --user status gamescope-session-plus@.service
Failed to get properties: Unit name gamescope-session-plus@.service is neither a valid invocation ID nor unit name.

The service file doesn't seem to work for me.

@ripplingsnake switch to desktop and a game mode shortcut are out of the scope of this package. It is not possible to do this in general as it requires a very specific configuration, including autologin configured and a known session manager and desktop environment.

See how it is done in ChimeraOS (lightdm + Gnome) by taking a look at these files:

• https://github.com/ChimeraOS/chimeraos/tree/master/rootfs/etc/lightdm (lightdm configuration)
• https://github.com/ChimeraOS/chimeraos/blob/master/rootfs/usr/share/applications/org.chimeraos.session-return.desktop (game mode shortcut)
• https://github.com/ChimeraOS/chimeraos/blob/master/rootfs/usr/share/wayland-sessions/gnome-session-oneshot.desktop (special one off gnome session - so that switching to desktop/gnome is not permanent)
• https://github.com/ChimeraOS/chimeraos/blob/master/rootfs/usr/bin/gnome-session-oneshot (see above)
• https://github.com/ChimeraOS/chimeraos/blob/master/rootfs/usr/lib/os-session-select (the script called by Steam when switching to desktop)

@xiota addressed your comments, thanks.

I have this and gamescope-session-steam git the problem is when selecting switch to desktop it doesn’t . Steam shuts down and the the gamescope session restarts. What have I missed to get it to exit to desktop? Also there is no return to game mode desktop shortcut I can find. Thanks

gamescope-git at least requires libliftoff but isnt a runtime dependency. Insstalling that package let it work for me.

Currently using SDDM, Plasma Wayland, gamescope-session-git and gamescope-session-steam-git. You also need glfw-x11 installed to satisfy mangoapp dep (included with manohud package)

@wustdsh I've got the same issue. I can still launch gamescope from a tty, but gamescope session just starts and nothing else happens.

My Gamescope session cmd:

/usr/bin/gamescope -e --xwayland-count 2 -O *,eDP-1 --default-touch-mode 4 --hide-cursor-delay 3000 --fade-out-duration 200 -R /run/user/1000/gamescope.AlRBZeP/startup.socket -T /run/user/1000/gamescope.AlRBZeP/stats.pipe

Log:

wlserver: [backend/headless/backend.c:68] Creating headless backend
wlserver: [libseat] [libseat/backend/seatd.c:64] Could not connect to socket /run/seatd.sock: No such file or directory
wlserver: [libseat] [libseat/libseat.c:76] Backend 'seatd' failed to open seat, skipping
wlserver: [libseat] [libseat/backend/logind.c:317] Could not activate session: Interactive authentication required.
wlserver: [libseat] [libseat/libseat.c:76] Backend 'logind' failed to open seat, skipping
wlserver: [libseat] [libseat/libseat.c:79] No backend was able to open a seat
wlserver: [backend/session/session.c:83] Unable to create seat: Function not implemented
wlserver: [backend/session/session.c:248] Failed to load session backend
wlserver: Failed to create session
Failed to initialize Wayland session

I am starting with greetd display manager:

[terminal]
# The VT to run the greeter on. Can be "next", "current" or a number
# designating the VT.
vt = "next"

# The default session, also known as the greeter.
[default_session]

# `agreety` is the bundled agetty/login-lookalike. You can replace `/bin/sh`
# with whatever you want started, such as `sway`.
command = "agreety --cmd openbox"

# The user to run the command as. The privileges this user must have depends
# on the greeter. A graphical greeter may for example require the user to be
# in the `video` group.
user = "media"

[initial_session]
command = "gamescope-session-plus steam"
user = "media"

LSCU:

Architecture:            x86_64
  CPU op-mode(s):        32-bit, 64-bit
  Address sizes:         43 bits physical, 48 bits virtual
  Byte Order:            Little Endian
CPU(s):                  16
  On-line CPU(s) list:   0-15
Vendor ID:               AuthenticAMD
  Model name:            AMD Ryzen 7 1700 Eight-Core Processor
    CPU family:          23
    Model:               1
    Thread(s) per core:  2
    Core(s) per socket:  8
    Socket(s):           1
    Stepping:            1
    Frequency boost:     enabled
    CPU(s) scaling MHz:  57%
    CPU max MHz:         3000.0000
    CPU min MHz:         1550.0000
    BogoMIPS:            6002.27
    Flags:               fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr
                         sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl nonst
                         op_tsc cpuid extd_apicid aperfmperf rapl pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4
                         _2 movbe popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm s
                         se4a misalignsse 3dnowprefetch osvw skinit wdt tce topoext perfctr_core perfctr_nb bpext
                         perfctr_llc mwaitx cpb hw_pstate ssbd ibpb vmmcall fsgsbase bmi1 avx2 smep bmi2 rdseed ad
                         x smap clflushopt sha_ni xsaveopt xsavec xgetbv1 clzero irperf xsaveerptr arat npt lbrv s
                         vm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold
                         avic v_vmsave_vmload vgif overflow_recov succor smca sev
Virtualization features:
  Virtualization:        AMD-V
Caches (sum of all):
  L1d:                   256 KiB (8 instances)
  L1i:                   512 KiB (8 instances)
  L2:                    4 MiB (8 instances)
  L3:                    16 MiB (2 instances)
NUMA:
  NUMA node(s):          1
  NUMA node0 CPU(s):     0-15
Vulnerabilities:
  Gather data sampling:  Not affected
  Itlb multihit:         Not affected
  L1tf:                  Not affected
  Mds:                   Not affected
  Meltdown:              Not affected
  Mmio stale data:       Not affected
  Retbleed:              Mitigation; untrained return thunk; SMT vulnerable
  Spec rstack overflow:  Mitigation; Safe RET
  Spec store bypass:     Mitigation; Speculative Store Bypass disabled via prctl
  Spectre v1:            Mitigation; usercopy/swapgs barriers and __user pointer sanitization
  Spectre v2:            Mitigation; Retpolines, IBPB conditional, STIBP disabled, RSB filling, PBRSB-eIBRS Not af
                         fected
  Srbds:                 Not affected
  Tsx async abort:       Not affected

gfx:

09:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Ellesmere [Radeon RX 470/480/570/570X/580/580X/590] (rev e7)