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Mon, 30 Sep 2024 10:35:43 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id tU4tBv9++mbaQwAAD6G6ig (envelope-from ); Mon, 30 Sep 2024 10:35:43 +0000 Date: Mon, 30 Sep 2024 12:36:36 +0200 Message-ID: <87ed51ig23.wl-tiwai@suse.de> From: Takashi Iwai To: Salvatore Bonaccorso Cc: Takashi Iwai , Jaroslav Kysela , linux-sound@vger.kernel.org, Eric Degenetais , linux-kernel@vger.kernel.org, stable , regressions@lists.linux.dev, Sasha Levin , Greg Kroah-Hartman Subject: Re: [regression] Regular "cracks" in HDMI sound during playback since backport to 6.1.y for 92afcc310038 ("ALSA: hda: Conditionally use snooping for AMD HDMI") In-Reply-To: References: User-Agent: Wanderlust/2.15.9 (Almost Unreal) Emacs/27.2 Mule/6.0 Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-Rspamd-Queue-Id: 672D01FB9C X-Spam-Score: -3.51 X-Rspamd-Action: no action X-Spamd-Result: default: False [-3.51 / 50.00]; BAYES_HAM(-3.00)[99.99%]; NEURAL_HAM_LONG(-1.00)[-1.000]; MID_CONTAINS_FROM(1.00)[]; R_DKIM_ALLOW(-0.20)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; MX_GOOD(-0.01)[]; MIME_TRACE(0.00)[0:+]; ARC_NA(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; FUZZY_BLOCKED(0.00)[rspamd.com]; FROM_HAS_DN(0.00)[]; RCVD_TLS_ALL(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; FROM_EQ_ENVFROM(0.00)[]; TO_DN_SOME(0.00)[]; RCPT_COUNT_SEVEN(0.00)[10]; DKIM_TRACE(0.00)[suse.de:+]; RCVD_VIA_SMTP_AUTH(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.de:mid,suse.de:dkim] X-Rspamd-Server: rspamd1.dmz-prg2.suse.org X-Spam-Flag: NO X-Spam-Level: On Sat, 28 Sep 2024 15:19:49 +0200, Salvatore Bonaccorso wrote: > > Hi > > In downstream Debian we got a report from Eric Degenetais, in > https://bugs.debian.org/1081833 that after the update to the 6.1.106 > based version, there were regular cracks in HDMI sound during > playback. > > Eric was able to bisec the issue down to > 92afcc310038ebe5d66c689bb0bf418f5451201c in the v6.1.y series which > got applied in 6.1.104. > > Cf. https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1081833#47 > > #regzbot introduced: 92afcc310038ebe5d66c689bb0bf418f5451201c > #regzbot link: https://bugs.debian.org/1081833 > > It should be noted that Eric as well tried more recent stable series > as well, in particular did test as well 6.10.6 based version back on > 20th september, and the issue was reproducible there as well. > > Is there anything else we can try to provide? Could you check 6.12-rc1 kernel whether the problem still appears? If yes, check with snd_hda_intel.snoop=0 boot option. I guess we should revert the patch in anyway; for 6.12, it's no longer correct to check with get_dma_ops(), and if this causes a problem on the older releases, the assumption isn't correct, either. thanks, Takashi