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Thu, 4 Sep 2025 16:44:54 -0400 (EDT) Date: Fri, 5 Sep 2025 05:44:50 +0900 From: Takashi Sakamoto To: Jaroslav Kysela Cc: "M. Armsby" , alsa-devel@alsa-project.org, Takashi Sakamoto Subject: Re: ALSAfirewire broken / Pipewire 90ms delay Message-ID: <20250904204450.GA221422@workstation.local> Mail-Followup-To: Jaroslav Kysela , "M. Armsby" , alsa-devel@alsa-project.org, Takashi Sakamoto References: <224C5A41-DCED-4FA2-BE82-898F257DA2E9@gmx.de> <20250724143813.GA23616@workstation.local> <48A27ABA-5EF6-400D-A47A-103C1A4ABC6D@gmx.de> <1B53DD0F-1D85-49EC-BA7F-970BE9AEF457@gmx.de> <20250903111519.GA76122@workstation.local> <3e07de0a-affa-4776-9172-83b2b071fbe8@perex.cz> <20250904131807.GA209723@workstation.local> <13e0868a-6528-42fa-ab9a-2b5e37e095f3@perex.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <13e0868a-6528-42fa-ab9a-2b5e37e095f3@perex.cz> Message-ID-Hash: JLKWXKN4SXPZXNVB47HPOG3UNGKIQ7IK X-Message-ID-Hash: JLKWXKN4SXPZXNVB47HPOG3UNGKIQ7IK X-MailFrom: o-takashi@sakamocchi.jp X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.9 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: On Thu, Sep 04, 2025 at 03:32:52PM +0200, Jaroslav Kysela wrote: > It would be nice to check the buffer size / period size values using procfs > for the problematic 2048 setup (see the referred thread), if there's a > demand to fix this. Maybe there's a mismatch between GUI/sound server > settings and driver settings. Please suggest that all people involved in the discussion use strace(1) to determine whether the failure originates from SNDRV_PCM_IOCTL_HW_PARAMS or SNDRV_PCM_IOCTL_PREPARE, since the alsa-lib API, 'snd_pcm_hw_params()', involves both and can be misleading. Thanks Takashi Sakamoto