diff options
Diffstat (limited to 'results/classifier/accel-gemma3:12b/kvm/1816052')
| -rw-r--r-- | results/classifier/accel-gemma3:12b/kvm/1816052 | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/results/classifier/accel-gemma3:12b/kvm/1816052 b/results/classifier/accel-gemma3:12b/kvm/1816052 new file mode 100644 index 000000000..b37e4d611 --- /dev/null +++ b/results/classifier/accel-gemma3:12b/kvm/1816052 @@ -0,0 +1,72 @@ + +qemu system emulator fails to start if no sound card is present on host + +A plain build from git master at 81dbcfa9e1d8bab3f7c4cc923c0b40cd666f374f on Fedora 29 x86_64 host, with no options passed to configure. + +Trying to launch QEMU on a host with no audio card present: + +# ls /dev/snd/ +seq timer + +It will fail to initialize alsa and abort startup: + +# qemu-system-x86_64 -cdrom Fedora-Workstation-Live-x86_64-29-1.2.iso -m 4000 -vnc 0.0.0.0:1 +ALSA lib confmisc.c:767:(parse_card) cannot find card '0' +ALSA lib conf.c:4555:(_snd_config_evaluate) function snd_func_card_driver returned error: No such file or directory +ALSA lib confmisc.c:392:(snd_func_concat) error evaluating strings +ALSA lib conf.c:4555:(_snd_config_evaluate) function snd_func_concat returned error: No such file or directory +ALSA lib confmisc.c:1246:(snd_func_refer) error evaluating name +ALSA lib conf.c:4555:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory +ALSA lib conf.c:5034:(snd_config_expand) Evaluate error: No such file or directory +ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM default +alsa: Could not initialize DAC +alsa: Failed to open `default': +alsa: Reason: No such file or directory +ALSA lib confmisc.c:767:(parse_card) cannot find card '0' +ALSA lib conf.c:4555:(_snd_config_evaluate) function snd_func_card_driver returned error: No such file or directory +ALSA lib confmisc.c:392:(snd_func_concat) error evaluating strings +ALSA lib conf.c:4555:(_snd_config_evaluate) function snd_func_concat returned error: No such file or directory +ALSA lib confmisc.c:1246:(snd_func_refer) error evaluating name +ALSA lib conf.c:4555:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory +ALSA lib conf.c:5034:(snd_config_expand) Evaluate error: No such file or directory +ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM default +alsa: Could not initialize DAC +alsa: Failed to open `default': +alsa: Reason: No such file or directory +init fail +audio: Failed to create voice `pcspk' +qemu-system-x86_64: Initialization of device isa-pcspk failed: Initializing audio voice failed + + +git bisect blames this change: + + + commit 6a48541873f14b597630283f8f5397674ad82ea9 (HEAD, refs/bisect/bad) + Author: Gerd Hoffmann <email address hidden> + Date: Thu Jan 24 12:20:55 2019 +0100 + + audio: probe audio drivers by default + + Add the drivers listed in audio_possible_drivers to audio_drv_list, + using the try-* variants. That way the probable drivers are compiled by + default if possible. + + Additioal tweaks: + linux: reorder to: pa alsa sdl oss. + *bsd: drop pa. + + Signed-off-by: Gerd Hoffmann <email address hidden> + Message-id: <email address hidden> + + +This changed our probe order: + + Linux) + - audio_drv_list="oss" + + audio_drv_list="try-pa try-alsa try-sdl oss" + +After some debugging I can see that 'audio_init' successfully initializes the alsa driver. + +When the pcspk devices goes to AUD_open_out though, the alsa driver fails spewing the above text to stderr and thus causes QEMU to fail. + +This looks very much like the ALSA driver in QEMU is broken - audio_init() should not have succeeded unless the ALSA driver knew it could later succesfully honour AUD_open_out. \ No newline at end of file |