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From: Matthew Schwartz <matthew.schwartz@linux.dev>
To: pmarheine@chromium.org
Cc: regressions@lists.linux.dev, stable@vger.kernel.org,
	rafael.j.wysocki@intel.com, linux-acpi@vger.kernel.org
Subject: [REGRESSION] - Multiple userspace implementations of battery estimate broken after "ACPI: battery: negate current when discharging"
Date: Wed, 2 Jul 2025 18:54:46 -0700	[thread overview]
Message-ID: <87C1B2AF-D430-4568-B620-14B941A8ABA4@linux.dev> (raw)

Hello,

I installed kernel 6.15.4 to find that my battery estimate on my handheld gaming device was completely inaccurate, instead giving negative values and an unknown estimated battery life in multiple places. 

After bisecting, I landed on "ACPI: battery: negate current when discharging” as the bad commit. This commit breaks not one but several userspace implementations of battery monitoring: Steam and MangoHud. Perhaps it breaks more, but those are the two I have noticed so far. 

Thanks,
Matthew Schwartz

             reply	other threads:[~2025-07-03  1:55 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-07-03  1:54 Matthew Schwartz [this message]
2025-07-03 10:58 ` [REGRESSION] - Multiple userspace implementations of battery estimate broken after "ACPI: battery: negate current when discharging" Rafael J. Wysocki
2025-07-03 14:47 ` Hans de Goede
2025-07-03 15:51   ` Matthew Schwartz
2025-07-06 22:27     ` Sebastian Reichel
2025-07-04  4:56   ` Peter Marheine
2025-07-04  8:47     ` Hans de Goede

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