Issues with DOTA 2

[cafdsj]

Hello,

I am experiencing issues running Dota 2 on Deepin 25.

When I try to run the game natively (without Proton), it fails due to a Vulkan API problem. Vulkan never works properly on my system, and the game does not launch.

However, when I enable Proton to run Dota 2, the game starts but then I receive a VAC (Valve Anti-Cheat) error, which prevents me from playing.

So in short:

• Native mode (no Proton): Vulkan API does not work, Dota 2 fails to start.
• Proton mode: Dota 2 launches, but always shows a VAC error.

Could you please help me identify whether this is a Deepin compatibility issue with Vulkan/graphics drivers or something else that needs fixing in the system?

Thank you for your support.

[Release]
Version=25
Type=Desktop
Type[zh_CN]=社区版
Edition=Y2020E0001
Copyright=Y2020CR001
[Addition]
Milestone=
Buildid=build1

Linux Junior-PC 6.12.36-amd64-desktop-rolling #25.01.01.02 SMP PREEMPT_DYNAMIC Thu Jul 10 14:47:34 CST 2025 x86_64 GNU/Linux

x86_64

01:00.0 VGA compatible controller: NVIDIA Corporation GA104 [GeForce RTX 3070] (rev a1)

Graphics:
Device-1: NVIDIA GA104 [GeForce RTX 3070] driver: nvidia v: 570.124.04
Display: x11 server: X.Org v: 1.21.1.14 with: Xwayland v: 24.1.4 driver:
X: loaded: nvidia unloaded: fbdev,modesetting,nouveau,vesa gpu: nvidia
resolution: 1920x1080~60Hz
API: EGL v: 1.5 drivers: kms_swrast,nvidia
platforms: gbm,x11,surfaceless,device
API: OpenGL v: 4.6.0 compat-v: 4.5 vendor: nvidia v: 570.124.04
renderer: NVIDIA GeForce RTX 3070/PCIe/SSE2
API: Vulkan v: 1.3.268 drivers: nvidia,llvmpipe surfaces: xcb,xlib

   driverInfo      = 570.124.04
    driverInfo                                           = 570.124.04

steam.sh[26954]: Running Steam on deepin 25 64-bit
steam.sh[26954]: STEAM_RUNTIME is enabled automatically
setup.sh[26989]: Steam runtime environment up-to-date!
steam.sh[26954]: Steam client's requirements are satisfied
CProcessEnvironmentManager is ready, 6 preallocated environment variables.
Steam is already running, exiting (command line was forwarded).

[cafdsj]

More information regarding the problem:

Failed to query vulkan gpu topology
Response:
Exit code: -2
steamwebhelper.sh[11272]: Starting steamwebhelper under bootstrap steamrt steam runtime via: /home/Junior/.local/share/Steam/steamrt64/steam-runtime-steamrt/_v2-entry-point
steamwebhelper.sh[11272]: Starting steamwebhelper with steamrt steam runtime at /home/Junior/.local/share/Steam/steamrt64/steam-runtime-steamrt/_v2-entry-point
x86_64-linux-gnu-capsule-capture-libs: warning: we are assuming "zx_print_driver_map_list" to be private, but it's just a guess
Steam Runtime Launch Service: starting steam-runtime-launcher-service
Steam Runtime Launch Service: steam-runtime-launcher-service is running pid 11369
bus_name=com.steampowered.PressureVessel.LaunchAlongsideSteam
exec ./steamwebhelper -nocrashdialog -lang=pt_BR -cachedir=/home/Junior/.local/share/Steam/config/htmlcache -steampid=11256 -buildid=1751405894 -steamid=0 -logdir=/home/Junior/.local/share/Steam/logs -uimode=7 -startcount=0 -steamuniverse=Public -realm=Global -clientui=/home/Junior/.local/share/Steam/clientui -steampath=/home/Junior/.local/share/Steam/ubuntu12_32/steam -launcher=0 -use_xcomposite_workaround --valve-enable-site-isolation --enable-smooth-scrolling --disable-gpu-compositing --disable-gpu --password-store=basic --log-file=/home/Junior/.local/share/Steam/logs/cef_log.txt --disable-quick-menu --disable-component-update --disable-features=SpareRendererForSitePerProcess,DcheckIsFatal,BlockPromptsIfIgnoredOften,ValveFFmpegAllowLowDelayHEVC
Vulkan missing requested extension 'VK_KHR_surface'.
Vulkan missing requested extension 'VK_KHR_xlib_surface'.
BInit - Unable to initialize Vulkan!
/usr/share/themes/deepin-dark/gtk-2.0/main.rc:1090: error: unexpected identifier 'direction', expected character '}'
Desktop state changed: desktop: { pos: 0, 0 size: 1920,1080 } primary: { pos: 0, 0 size: 1920,1080 }
Caching cursor image for ibeam, size 24x24, serial 232, cache size = 0
reaping pid: 11257 -- sh

[BLumia]

Just would like to know. If you use the flatpak version of Steam (from flathub), and use that to play Dota 2, will that have the same issue?

[cafdsj]

IDK.

I did the download by terminal using sudo apt install steam, and using the Deeping Store. In these 2 times I had the same problem. I never tried to install using flatpak.

[cafdsj]

But, I'm only have this problem with DOTA 2. I play Magic Arena, and I don't have this problem with MTG Arena.