I got this new laptop, installed 18.04 on it, and so far I can't get the audio to work (both internal/external speakers). The card exists, and in audio settings it seems normal and microphone works.

0 [PCH]:
HDA-Intel - HDA Intel PCH
HDA Intel PCH at 0xec228000 irq 134

In another question, the suggestion was to do this but it didn't work for me:

sudo nano /etc/modprobe.d/alsa-base.conf 
add line : options snd-hda-intel model=pch position_fix=1

Thanks in advance.

  • Can confirm that! But sound through Bluetooth boxes/headphones works. Does yours right top corner around the power button run also very hot on normal tasks? This issue is also mentioned here and here. – DMT Aug 28 '18 at 7:40
  • 1
    Hi there. Thanks for replying. I ended up giving up. I think the issue is coming from the laptop itself, we tried so many things and nothing worked, but we didn't try bluetooth. I then installed Fedora, got some audio, but after 10sec the audio died. We concluded about the hardware because all distro we tried didn't work, but the bluetooth worked. USB-C headphones too. – Raphael Leroux Aug 29 '18 at 12:20
  • Still no sound with Ubuntu 18.10. – DMT Oct 20 '18 at 19:12
  • I've opened another issue regarding this notebook. It's about overheating. Would be very helpful, if you could share your experience here: askubuntu.com/questions/1087672/unusually-hot-asus-ux391ua – DMT Oct 27 '18 at 9:12
  • Does shutting down the computer completely (not restart. an actual cold bootup) and booting straight to linux fix the problem? it does for me on a very similar issue – Hilikus Dec 11 '18 at 4:29

After some help from https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1784485 I finally fixed the problem.

It requires new kernel and some manual patching.

First download kernel source and extract it

wget https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.19.12.tar.xz
tar Jxf linux-4.19.12.tar.xz

Install necessary packages

sudo apt-get install build-essential libncurses-dev bison flex \
             libssl-dev libelf-dev

Copy kernel config

cd linux-4.19.12/
cp -v /boot/config-$(uname -r) .config
make defconfig

Add support for UX391UA

Add line to file sound/pci/hda/patch_realtek.c

SND_PCI_QUIRK(0x1043, 0x10a1, "ASUS UX391UA", ALC294_FIXUP_ASUS_SPK)

In patch format

--- patch_realtek.c.bck 2018-12-21 14:15:25.000000000 +0100
+++ patch_realtek.c 2018-12-30 16:13:23.970326312 +0100
@@ -6584,6 +6584,7 @@
    SND_PCI_QUIRK(0x1043, 0x13b0, "ASUS Z550SA", ALC256_FIXUP_ASUS_MIC),
    SND_PCI_QUIRK(0x1043, 0x1427, "Asus Zenbook UX31E", ALC269VB_FIXUP_ASUS_ZENBOOK),
    SND_PCI_QUIRK(0x1043, 0x14a1, "ASUS UX533FD", ALC294_FIXUP_ASUS_SPK),
+    SND_PCI_QUIRK(0x1043, 0x10a1, "ASUS UX391UA", ALC294_FIXUP_ASUS_SPK),
    SND_PCI_QUIRK(0x1043, 0x1517, "Asus Zenbook UX31A", ALC269VB_FIXUP_ASUS_ZENBOOK_UX31A),
    SND_PCI_QUIRK(0x1043, 0x16e3, "ASUS UX50", ALC269_FIXUP_STEREO_DMIC),
    SND_PCI_QUIRK(0x1043, 0x1a13, "Asus G73Jw", ALC269_FIXUP_ASUS_G73JW),

Build kernel

This command must be executed in top directory of linux source.

make -j `getconf _NPROCESSORS_ONLN` deb-pkg LOCALVERSION=-custom

Install new kernel and reboot

cd ..
sudo dpkg -i linux-headers-4.19.12-custom_4.19.12-custom-1_amd64.deb \
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  • Hi Pawel! This does not provide an answer to the question. Once you have sufficient reputation you will be able to comment on any post; instead, provide answers that don't require clarification from the asker. – abu_bua Jul 21 '18 at 12:43
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    @abu_bua Installing a new and patched kernel does indeed solves it. What makes you think it does not? – DMT Jan 7 '19 at 9:41

A more comfortable way is to install the Ubuntu Kernel Update Utility (UKUU) and upgrade to the v5.0-rc1 kernel. The stable v4.20 doesn't include the fix for the Asus UX391UA, as described here.

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