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Valve have released SteamOS 3.7.7 Beta "Sunny & Gizmo" with the noted changes including the new Battery Charge Limit option along with more work for the Lenovo Legion Go S.

A bit confusing this one, since Valve say in this SteamOS Beta how it includes the Battery Charge Limit option, which was actually rolled out earlier in May via a Steam Deck Beta Client update. Presumably then, this is work directly in SteamOS to support it for more devices.

Valve are also working right up against the clock here for the Legion Go S, since the SteamOS version is due to launch really soon. From the changelog:

General

  • Added Battery Charge Limit control to Settings -> Power.
    • This option allows you to set a maximum charge limit for your Steam Deck.
    • Limiting the charge limit to 80% can be beneficial for long term battery health. This can be useful if your Steam Deck is constantly being charged (e.g. docked), or very rarely has its battery depleted.
  • Fixed a case where the performance overlay could spuriously appear and could not be disabled.
  • Fixed an issue where exiting a game from the overlay could result in the UI getting stuck until a button is pressed.
  • Desktop mode will no longer erroneously nag the user to install power profiles daemon.
  • Added support for updating controller and system firmware on the Legion Go S.

This update is available via the Beta and Preview channels in Settings > System > System Update Channel.

Article taken from GamingOnLinux.com.
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5 comments Subscribe

Pyrate 8 hours ago
Is it not reasonable to expect this SteamOS Beta branch, that's in development to support other devices, to leave the Beta state simultaneously with this Lenovo device release ? It can only make sense for the OS to be in a Stable state when the device comes out, right ?
Eike 8 hours ago
  • Supporter Plus
Is it not reasonable to expect this SteamOS Beta branch, that's in development to support other devices, to leave the Beta state simultaneously with this Lenovo device release ? It can only make sense for the OS to be in a Stable state when the device comes out, right ?

I could imagine all three variants: simultaneously (IMHO the least likely), SteamOS first, device first. I mean... there's already a device running SteamOS without it being "released", right? And Lenovo won't wait until Valve declares some general readiness,
Corben 7 hours ago
Though I'm not using Steam OS on my ROG Ally (yet) but bazzite, the Steam Client there has already adapted to the new rating system. I do see now blue checkmarks instead of the green check or yellow exlamation mark, telling me games being Steam OS compatible. When I open the info box, it still has a tab for Steam Deck compatibilty info.

Will be interesting to see how this will adapt to the year in review summary, will it show how much I've played on Deck and on other handheld devices? Will it now show just Steam OS devices? We will see :)


Last edited by Corben on 22 May 2025 at 10:56 am UTC
Liam Dawe 6 hours ago
  • Admin
I imagine for the summary, at a minimum they will keep the Steam Deck bit, after all it is their own direct device. They'll probably expand the platform bit to specifically note SteamOS instead.
R Daneel Olivaw 4 hours ago
  • Supporter
I'm super excited to get the battery limit feature in the normal non-beta release! That'll help tons.
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