Wowlan capability on rtl2783be driver doesn't work

[smurf]

I have an all-in-one HP pc with rtl8723be wireless wifi card.
I'm trying to enable wowlan capability on the card, but I can't.

This is my system:

supervisore@Aula16:~$ uname -a
Linux Aula16 4.15.0-54-generic #58-Ubuntu SMP Mon Jun 24 10:55:24 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
supervisore@Aula16:~$
supervisore@Aula16:~$ sudo lshw -class network
  *-network
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: enp2s0
       version: 10
       serial: b4:b6:86:db:b2:8e
       size: 10Mbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8168g-3_0.0.1 04/23/13 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
       resources: irq:18 ioport:e000(size=256) memory:81304000-81304fff memory:81300000-81303fff
  *-network
       description: Wireless interface
       product: RTL8723BE PCIe Wireless Network Adapter
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:03:00.0
       logical name: wlp3s0
       version: 00
       serial: 50:5b:c2:a8:ab:eb
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=rtl8723be driverversion=4.15.0-54-generic firmware=N/A ip=192.168.3.116 latency=0 link=yes multicast=yes wireless=IEEE 802.11
       resources: irq:19 ioport:d000(size=256) memory:81200000-81203fff
supervisore@Aula16:~$

Reading on the Realtek site https://www.realtek.com/en/products/communications-network-ics/item/rtl8723be I see that the wifi card has the wowlan capability, but when I try to enable it I receive

supervisore@Aula16:~$ sudo iw phy0 wowlan enable magic-packet
command failed: Operation not supported (-95)

I really need to enable the wowlan feature on the card, how?

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

To change the source package that this bug is filed about visit https://bugs.launchpad.net/ubuntu/+bug/1836899/+editstatus and add the package name in the text box next to the word Package.

[This is an automated message. I apologize if it reached you inappropriately; please just reply to this message indicating so.]

[Juerg Haefliger (juergh)]

I'm closing this bug due to old age. Please open a new bug if you think the issue still exists.