Issues

• Portal 2 Public Matchmaking Repeatedly Connects to Modded 33-Player Server

  ValveSoftware/portal2#490 · Filter by author ninjacola opened on Nov 1, 2026

• Portal 2 bug

  ValveSoftware/portal2#489 · Filter by author fmf753fmf-ship-it opened on Oct 6, 2026

• [Portal 2] CO-OP Softlock by Death: Course 1 Part 4 Room 04

  not linux specific
  ValveSoftware/portal2#488 · Filter by author moneyfraud opened on Sep 30, 2026

• Monitor Resolution Incorrectly Detected using Ubuntu + KDE Plasma

  ValveSoftware/portal2#487 · Filter by author JRTRCT opened on Sep 21, 2026

• Final Wheatley core transfer stalemate button bug at 4k

  ValveSoftware/portal2#486 · Filter by author basurahombre opened on Sep 13, 2026

• Steam Deck controls seem to change after latest update

  ValveSoftware/portal2#485 · Filter by author AZero13 opened on Jul 28, 2026

• On ultrawide monitors, the loading screens get badly stretched

  ValveSoftware/portal2#483 · Filter by author mskiptr opened on Jul 8, 2026

• [Portal 2] Broken Russian localization

  not linux specific
  ValveSoftware/portal2#481 · Filter by author meatbag234 opened on Jun 27, 2026

• nvidia prime render offload not working for this game

  ValveSoftware/portal2#478 · Filter by author Rabcor opened on Jun 2, 2026
  1

• Model Mesh cache never cleared after demo playback causing crash

  not linux specific
  ValveSoftware/portal2#477 · Filter by author betsruner opened on May 28, 2026

• Main Menu Bug

  ValveSoftware/portal2#476 · Filter by author agamedevandayt opened on May 22, 2026

• Portal 2 is a pain in the ass to run on Fedora Asahi Remix

  ValveSoftware/portal2#475 · Filter by author Neil-Ciciglycerin opened on May 2, 2026
  2

• Neurotoxin chamber entrance to next level not opening

  ValveSoftware/portal2#474 · Filter by author Tarsslick703 opened on Apr 6, 2026
  1

• ​UI text alignment issue in Chapter 9 (Russian localization)

  ValveSoftware/portal2#473 · Filter by author solmyyy opened on Mar 22, 2026
  3

• Crash when starting multiple local servers if sv_lan was changed in between

  ValveSoftware/portal2#472 · Filter by author vrad-exe opened on Mar 1, 2026

• Regression: Co-op randomly kicks to menu with "no steam logon" error

  not linux specific
  ValveSoftware/portal2#471 · Filter by author vrad-exe opened on Mar 1, 2026
  15

• [Portal 2] Mouse cursor not locked into window (vulkan)

  ValveSoftware/portal2#470 · Filter by author rugk opened on Feb 3, 2026

• Softlock in Chapter 2; companion cube room

  not linux specific
  ValveSoftware/portal2#469 · Filter by author melodyvw opened on Nov 27, 2025

• Projected textures cause noise/static on certain textures on Nvidia graphics cards

  not linux specific
  ValveSoftware/portal2#468 · Filter by author vrad-exe opened on Nov 24, 2025
  1

• Request: Native Apple Silicon (ARM64) support for Portal 2 on macOS

  enhancementnot linux specific
  ValveSoftware/portal2#467 · Filter by author sdk-los opened on Nov 12, 2025
  5

• [Portal 2]: postprocess_controller has a flawed implementation

  not linux specific
  ValveSoftware/portal2#464 · Filter by author lunairekitty opened on Sep 1, 2025

• [P2] host_timescale does not effect Bink playback

  not linux specific
  ValveSoftware/portal2#461 · Filter by author Buggem opened on Jul 15, 2025

• Possibility of Portal 2 SDK/Source Code Release

  ValveSoftware/portal2#460 · Filter by author vrad-exe opened on Jul 5, 2025
  17

• Portal 2 Crosshair bug

  ValveSoftware/portal2#459 · Filter by author JJQuasar opened on Jun 12, 2025
  1

• the "Achievements" exploit

  ValveSoftware/portal2#458 · Filter by author Matedev8888 opened on May 7, 2025
  1