Public bug reported: Booting the v2.6.22-14 kernel, sound does not work on my Acer Aspire 550Z laptop with an Intel audio chipset: $ lspci | grep Audio 00:1e.2 Multimedia audio controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) AC'97 Audio Controller (rev 04)
The following errors are generated in dmesg: [...] [ 18.792000] snd_ac97_codec: disagrees about version of symbol snd_info_register [ 18.792000] snd_ac97_codec: Unknown symbol snd_info_register [ 18.792000] snd_ac97_codec: disagrees about version of symbol snd_ctl_add [ 18.792000] snd_ac97_codec: Unknown symbol snd_ctl_add [ 18.792000] snd_ac97_codec: disagrees about version of symbol snd_info_free_entry [ 18.792000] snd_ac97_codec: Unknown symbol snd_info_free_entry [ 18.792000] snd_ac97_codec: disagrees about version of symbol snd_ctl_find_id [ 18.792000] snd_ac97_codec: Unknown symbol snd_ctl_find_id [ 18.792000] snd_ac97_codec: disagrees about version of symbol snd_ctl_new1 [ 18.792000] snd_ac97_codec: Unknown symbol snd_ctl_new1 [ 18.792000] snd_ac97_codec: disagrees about version of symbol snd_ctl_remove_id [ 18.792000] snd_ac97_codec: Unknown symbol snd_ctl_remove_id [ 18.792000] snd_ac97_codec: disagrees about version of symbol snd_component_add [ 18.792000] snd_ac97_codec: Unknown symbol snd_component_add [ 18.792000] snd_ac97_codec: disagrees about version of symbol snd_pcm_hw_rule_add [ 18.792000] snd_ac97_codec: Unknown symbol snd_pcm_hw_rule_add [ 18.792000] snd_ac97_codec: disagrees about version of symbol snd_device_new [ 18.792000] snd_ac97_codec: Unknown symbol snd_device_new [ 18.792000] snd_ac97_codec: disagrees about version of symbol snd_info_create_card_entry [ 18.792000] snd_ac97_codec: Unknown symbol snd_info_create_card_entry [ 18.804000] snd_intel8x0: Unknown symbol snd_ac97_pcm_close [ 18.804000] snd_intel8x0: Unknown symbol snd_ac97_resume [ 18.804000] snd_intel8x0: disagrees about version of symbol snd_pcm_new [ 18.804000] snd_intel8x0: Unknown symbol snd_pcm_new [ 18.804000] snd_intel8x0: disagrees about version of symbol snd_pcm_limit_hw_rates [ 18.804000] snd_intel8x0: Unknown symbol snd_pcm_limit_hw_rates [ 18.804000] snd_intel8x0: disagrees about version of symbol snd_card_register [ 18.804000] snd_intel8x0: Unknown symbol snd_card_register [ 18.804000] snd_intel8x0: disagrees about version of symbol snd_card_free [ 18.804000] snd_intel8x0: Unknown symbol snd_card_free [ 18.804000] snd_intel8x0: disagrees about version of symbol snd_pcm_lib_preallocate_pages_for_all [ 18.804000] snd_intel8x0: Unknown symbol snd_pcm_lib_preallocate_pages_for_all [ 18.804000] snd_intel8x0: disagrees about version of symbol snd_card_proc_new [ 18.804000] snd_intel8x0: Unknown symbol snd_card_proc_new [ 18.804000] snd_intel8x0: Unknown symbol snd_ac97_pcm_open [ 18.804000] snd_intel8x0: Unknown symbol snd_ac97_set_rate [ 18.804000] snd_intel8x0: Unknown symbol snd_ac97_update_bits [ 18.804000] snd_intel8x0: Unknown symbol snd_ac97_mixer [ 18.804000] snd_intel8x0: Unknown symbol snd_ac97_bus [ 18.804000] snd_intel8x0: disagrees about version of symbol snd_dma_free_pages [ 18.804000] snd_intel8x0: Unknown symbol snd_dma_free_pages [ 18.804000] snd_intel8x0: Unknown symbol snd_ac97_pcm_double_rate_rules [ 18.804000] snd_intel8x0: Unknown symbol snd_ac97_update_power [ 18.804000] snd_intel8x0: disagrees about version of symbol snd_card_new [ 18.804000] snd_intel8x0: Unknown symbol snd_card_new [ 18.804000] snd_intel8x0: Unknown symbol snd_ac97_suspend [ 18.804000] snd_intel8x0: disagrees about version of symbol snd_pcm_lib_malloc_pages [ 18.804000] snd_intel8x0: Unknown symbol snd_pcm_lib_malloc_pages [ 18.804000] snd_intel8x0: disagrees about version of symbol snd_pcm_lib_ioctl [ 18.804000] snd_intel8x0: Unknown symbol snd_pcm_lib_ioctl [ 18.804000] snd_intel8x0: disagrees about version of symbol snd_pcm_lib_free_pages [ 18.804000] snd_intel8x0: Unknown symbol snd_pcm_lib_free_pages [ 18.804000] snd_intel8x0: disagrees about version of symbol snd_pcm_set_ops [ 18.804000] snd_intel8x0: Unknown symbol snd_pcm_set_ops [ 18.804000] snd_intel8x0: disagrees about version of symbol snd_pcm_hw_constraint_list [ 18.804000] snd_intel8x0: Unknown symbol snd_pcm_hw_constraint_list [ 18.804000] snd_intel8x0: disagrees about version of symbol snd_device_new [ 18.804000] snd_intel8x0: Unknown symbol snd_device_new [ 18.804000] snd_intel8x0: Unknown symbol snd_ac97_get_short_name [ 18.804000] snd_intel8x0: disagrees about version of symbol snd_pcm_suspend_all [ 18.804000] snd_intel8x0: Unknown symbol snd_pcm_suspend_all [ 18.804000] snd_intel8x0: disagrees about version of symbol snd_card_disconnect [ 18.804000] snd_intel8x0: Unknown symbol snd_card_disconnect [ 18.804000] snd_intel8x0: Unknown symbol snd_ac97_pcm_assign [ 18.804000] snd_intel8x0: disagrees about version of symbol snd_pcm_hw_constraint_integer [ 18.804000] snd_intel8x0: Unknown symbol snd_pcm_hw_constraint_integer [ 18.804000] snd_intel8x0: disagrees about version of symbol snd_pcm_hw_constraint_msbits [ 18.804000] snd_intel8x0: Unknown symbol snd_pcm_hw_constraint_msbits [ 18.804000] snd_intel8x0: disagrees about version of symbol snd_dma_alloc_pages [ 18.804000] snd_intel8x0: Unknown symbol snd_dma_alloc_pages [ 18.804000] snd_intel8x0: disagrees about version of symbol snd_pcm_period_elapsed [ 18.804000] snd_intel8x0: Unknown symbol snd_pcm_period_elapsed [ 18.804000] snd_intel8x0: Unknown symbol snd_ac97_tune_hardware Booting the 2.6.22-12 kernel alleviates the problem; audio works normally with this kernel. I have the latest kernel 2.6.22-14 packages installed: [EMAIL PROTECTED]:~$ less /var/log/dpkg.log | grep image 2008-02-05 12:53:21 upgrade linux-image-2.6.22-14-generic 2.6.22-14.47 2.6.22-14.51 2008-02-05 12:55:55 status installed linux-image-2.6.22-14-generic 2.6.22-14.51 ** Affects: ubuntu Importance: Undecided Status: New -- no sound under 2.6.22-14 kernel https://bugs.launchpad.net/bugs/189366 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs