linux-kernel - Fwd: Abnormal battery drain with kernel 6.5 (Ryzen 5500u)

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <bede02c1-ef90-8e30-aa8b-e6fae49a8ccf@gmail.com>
Date:   Fri, 1 Sep 2023 16:42:22 +0700
From:   Bagas Sanjaya <bagasdotme@...il.com>
To:     Huang Rui <ray.huang@....com>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Michele Della Guardia <micheledellaguardia@...oo.it>
Cc:     Linux Power Management <linux-pm@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Regressions <regressions@...ts.linux.dev>
Subject: Fwd: Abnormal battery drain with kernel 6.5 (Ryzen 5500u)

Hi,

I notice a regression report on Bugzilla [1] that have been already handled
there. Quoting from it:

> After switching from 6.4.x kernel to 6.5 I experienced an abnormal battery drain since my laptop is actually never idle.
> I accepted default CPUfreq to schedutil and AMD Processor P-State mode is 3 (active). 
> 
> I expected a different behaviour, but am I missing something?
> In my boot configuration I had "amd_pstate.shared_mem=1" and tried to remove this switch, but did not affect my power consuption.
> 
> Is there something changed from 6.4.x to 6.5 that requires a different configuration to get an optimal power consumption?
> 
> Thanks a lot for your attention

See Bugzilla for the full thread.

Anyway, I'm adding it to regzbot:

#regzbot introduced: v6.4..v6.5 https://bugzilla.kernel.org/show_bug.cgi?id=217853

Thanks.

-- 
An old man doll... just what I always wanted! - Clara