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b=FzAmJ0bSDCw3JfXVydvRyE0daPuY1JlfpuvNfnMRRKetFBu5fVfwhpCiBT9x1IzUPNVDDJSlk6QMYaRz3ijp+LIzdMOARcCF1V6/ssU75oiZZKYKwm5BsHXhpVWw7b0sYRajkMZL82PMa4HkmnrijfM5ZcYk3Gg6efPlscYTRKg= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=amd.com; Received: from SN7PR12MB6839.namprd12.prod.outlook.com (2603:10b6:806:265::21) by CH3PR12MB7641.namprd12.prod.outlook.com (2603:10b6:610:150::18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7807.33; Fri, 2 Aug 2024 15:18:51 +0000 Received: from SN7PR12MB6839.namprd12.prod.outlook.com ([fe80::eaf3:6d41:3ac0:b5f4]) by SN7PR12MB6839.namprd12.prod.outlook.com ([fe80::eaf3:6d41:3ac0:b5f4%6]) with mapi id 15.20.7807.026; Fri, 2 Aug 2024 15:18:51 +0000 Message-ID: <7699dc60-89b7-4387-84e9-50974c345c9e@amd.com> Date: Fri, 2 Aug 2024 11:18:48 -0400 User-Agent: Mozilla Thunderbird Subject: Re: [REGRESSION] Brightness at max level after waking up from sleep on AMD Laptop To: Linux regressions mailing list Cc: alexander.deucher@amd.com, serg.partizan@gmail.com, "amd-gfx@lists.freedesktop.org" , mario.limonciello@amd.com, ML dri-devel , LKML References: <77KAHS.13UUH2XVHQQF1@gmail.com> <245f2c54-6d06-4b71-a9f8-a6fc0dbcceb3@leemhuis.info> Content-Language: en-US From: Hamza Mahfooz In-Reply-To: <245f2c54-6d06-4b71-a9f8-a6fc0dbcceb3@leemhuis.info> Content-Type: text/plain; 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Um, for the time being you should be able to set `amdgpu.abmlevel=0` in the kernel's cmdline to avoid the issue. > >> I have tested this on latest mainline kernel: >> >> Results after waking up: >> >>> cat /sys/class/backlight/amdgpu_bl1/{brightness,actual_brightness} >> 12 >> 252 >> >> Then, on exact this commit (63d0b87213a0ba241b3fcfba3fe7b0aed0cd1cc5), >> result is the same. >> >> Then, on commit just before this one (aeaf3e6cf842): >> >>> cat /sys/class/backlight/amdgpu_bl1/{brightness,actual_brightness} >> 12 >> 12 >> >> I hope I included all relevant information, more info can be found here: >> >> https://gitlab.archlinux.org/archlinux/packaging/packages/linux/-/issues/52 > > Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat) > -- > Everything you wanna know about Linux kernel regression tracking: > https://linux-regtracking.leemhuis.info/about/#tldr > If I did something stupid, please tell me, as explained on that page. > > P.S.: > > #regzbot introduced: 63d0b87213a0ba241 -- Hamza