Public bug reported: After using my computer for a day or so and coming back to it, my sound card, EMU 1212m, randomly stops to work. And the only solution I have found is completely turn off the power to the motherboard and wait a few minutes until powering back on.
When the card works, I am able to reproduce the problem after typing: sudo echo 1 > /sys/bus/pci/devices/0000:05:04.0/reset Executing that command stops the card from outputting any sound, and I see the following printed in dmesg: [ 73.029029] snd_pcm_update_hw_ptr0: 3153 callbacks suppressed [ 73.029033] snd_emu10k1 0000:05:04.0: invalid position: , pos = 16759783, buffer size = 16384, period size = 16384 [ 73.029114] snd_emu10k1 0000:05:04.0: invalid position: , pos = 16759783, buffer size = 16384, period size = 16384 [ 73.029122] snd_emu10k1 0000:05:04.0: invalid position: , pos = 16759783, buffer size = 16384, period size = 16384 [ 73.040768] snd_emu10k1 0000:05:04.0: invalid position: , pos = 16759783, buffer size = 16384, period size = 16384 [ 73.046208] snd_emu10k1 0000:05:04.0: interrupt: PCI error [ 73.046235] AMD-Vi: Event logged [IO_PAGE_FAULT device=05:00.0 domain=0x0015 address=0x0 flags=0x0000] [ 73.046244] AMD-Vi: Event logged [IO_PAGE_FAULT device=05:00.0 domain=0x0015 address=0x0 flags=0x0000] [ 73.046250] AMD-Vi: Event logged [IO_PAGE_FAULT device=05:00.0 domain=0x0015 address=0x0 flags=0x0000] [ 73.046255] AMD-Vi: Event logged [IO_PAGE_FAULT device=05:00.0 domain=0x0015 address=0x0 flags=0x0000] [ 73.046261] AMD-Vi: Event logged [IO_PAGE_FAULT device=05:00.0 domain=0x0015 address=0x0 flags=0x0000] [ 73.046266] AMD-Vi: Event logged [IO_PAGE_FAULT device=05:00.0 domain=0x0015 address=0x0 flags=0x0000] Further resets result in [ 497.663897] snd_emu10k1 0000:05:04.0: invalid position: , pos = 16759783, buffer size = 16384, period size = 16384 [ 497.663971] snd_emu10k1 0000:05:04.0: invalid position: , pos = 16759783, buffer size = 16384, period size = 16384 [ 497.663997] snd_emu10k1 0000:05:04.0: invalid position: , pos = 16759783, buffer size = 16384, period size = 16384 [ 497.674025] snd_emu10k1 0000:05:04.0: invalid position: , pos = 16759783, buffer size = 16384, period size = 16384 [ 497.684046] snd_emu10k1 0000:05:04.0: invalid position: , pos = 16759783, buffer size = 16384, period size = 16384 [ 497.694065] snd_emu10k1 0000:05:04.0: invalid position: , pos = 16759783, buffer size = 16384, period size = 16384 It seems this is a problem with the driver snd_emu10k1 (maybe invalid buffer size?). In the past, I have used this card in earlier Ubuntu's before without any issues. All I had to do was to build and install the latest alsa-firmware, alsa-lib, and alsa-utils from https://www.alsa-project.org/wiki/Download. It's surprising that this card is not natively supported out of the box in 20.04, but even worse, the driver emu10k1 appears to be broken. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: alsa-base 1.0.25+dfsg-0ubuntu5 ProcVersionSignature: Ubuntu 5.4.0-40.44-generic 5.4.44 Uname: Linux 5.4.0-40-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.3 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Fri Jul 3 14:56:03 2020 InstallationDate: Installed on 2020-06-16 (17 days ago) InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423) PackageArchitecture: all ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: alsa-driver UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/12/2020 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 1409 dmi.board.asset.tag: Default string dmi.board.name: ROG STRIX X570-E GAMING dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: Rev X.0x dmi.chassis.asset.tag: Default string dmi.chassis.type: 3 dmi.chassis.vendor: Default string dmi.chassis.version: Default string dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1409:bd05/12/2020:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnROGSTRIXX570-EGAMING:rvrRevX.0x:cvnDefaultstring:ct3:cvrDefaultstring: dmi.product.family: To be filled by O.E.M. dmi.product.name: System Product Name dmi.product.sku: SKU dmi.product.version: System Version dmi.sys.vendor: System manufacturer ** Affects: alsa-driver (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug focal -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1886235 Title: EMU 1212m card (emu10k1 driver) stops working after PCI reset To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1886235/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
