Questions[realtek](ubuntu)

So I did a fresh install of Ubuntu 20.04 on a computer with the new RTL8125B Realtek network card and I cannot get the network to work.

I was very suprised since this is supposed to be the new feature of the 5.4 kernel (I have 5.4.0-26-generic installed).

Does anyone have any idea on how to get it working? Thank you.

$ lspci -knn | grep Eth -A3
06:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8125 2.5GbE Controller [10ec:8125] (rev 04)
Subsystem: ASUSTeK Computer Inc. RTL8125 2.5GbE Controller [1043:87d7]
Kernel modules: r8169
07:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Ellesmere [Radeon RX 470/480/570/570X/580/580X/590] [1002:67df] (rev e7)

$ dmesg | grep -i r8169
[    0.911236] r8169 0000:06:00.0: unknown chip XID 641

I bought a rtl8811au chipest based usb wifi for my work stationd that supports dual band. But when I plugged in the usb my ubuntu doesn't recognized it. So I had to find the driver and compiled it 'cause the one inside the usb package was not compatible with the last kernel version.

My experience with some drivers get from github platform was unsatisfied.

All the drivers I tested are an issue in my user experience. It seems that, with these drivers, my wifi usb stops working randomly, specially when the browser is open and it loads some javascript.

In that context the ping command works normally and all the other connections such as p2p like torrent, or app like telegram.

When that issue shows up, I have some options:

• Waiting to work again with do nothing
• Unplug and replug the usb dongle
• Restart network service or turn off and turn on wifi

With all these options I have to wait and it is so heartbreaking !

So I think that the problem is relative to the driver 'cause I get it from github and it can contain some error.

I tried drivers like:

• https://github.com/diederikdehaas/rtl8812AU
• https://github.com/sloretz/rtl8811au
• https://github.com/abperiasamy/rtl8812AU_8821AU_linux.git

and the problem still persists on all these drivers.

Do you know some driver that works properly ?

I am on my way to completely shift from windows 10 to Ubuntu. So I dual booted the latest Ubuntu 18.04 LTS. After doing so I realized that my laptop's volume is too low. In windows 10, the volume would be loud enough to fill an empty room, but in Ubuntu, I have to put my ears to the speaker to listen, even after having the volume to full maximum. Some articles suggested that I check out alsamixer, but that too wasn't of much help.
I then realized that I might have to install the drivers. Now here's the problem, on windows, my audio driver shows as Realtek HD Audio whereas in linux it shows Intel Corporation Sunrise Point-LP HD Audio. I know for sure that my audio drivers are from Realtek, because even HP's support website says so. I even have the Realtek HD Audio Manager in windows. I don't want to mess up my system trying to install any wrong driver. Please help me, I've been struggling with this for days now

rdias002@rdias002:~$ lspci -v | grep -A7 -i "audio"
00:1f.3 Audio device: Intel Corporation Sunrise Point-LP HD Audio (rev 21) (prog-if 80)
Subsystem: Hewlett-Packard Company Sunrise Point-LP HD Audio
Flags: bus master, fast devsel, latency 32, IRQ 129
Memory at b1228000 (64-bit, non-prefetchable) [size=16K]
Memory at b1200000 (64-bit, non-prefetchable) [size=64K]
Capabilities: <access denied>
Kernel driver in use: snd_hda_intel
Kernel modules: snd_hda_intel, snd_soc_skl

I tried searching for solutions but couldn't really find one that fits my problem. I almost gave up, but then thought of asking for help here. Please excuse me if my question seems noobish, as this is my first time.
I am a windows power user so I'm familiar with computers and the command line, but quite a beginner to linux.
So how can I get the windows like volume in Ubuntu?
Thanks for help in advance.
Laptop: HP 15 bs-544-tu

I have moved house and in my new house my desk, with the computer, is isolated and cannot get the cable fron the router though there is not a big distance, probably 10 meters.

So I dusted off an old dongle I bought for my laptop some time ago, I connected to a free usb 2.0 and everything went smooth I was connected to my wifi in no time, but the max I could get was 5.7 mbps Download and 7.7 upload, this with a 100 mb connection.

I tried a series of ways to get that improved with no success, so finally I decided to buy something to get this improved, first I bought a repeater, but the improve, if any, was neglectable,finally checking in different places I decided to buy a new dongle in Amazon. A wifi adaptor ac1200 with Realtek 8812Au.

It wasn't easy to make it work, my knowledge of Ubuntu is not up to a pro, but finally, following the explanations from a web site (the disk that accompanied the adapter was ALL in chinese!!):

sudo apt-get update
sudo apt-get install linux-headers-generic build-essential git
git clone https://github.com/abperiasamy/rtl8812AU_8821AU_linux.git
cd rtl8812AU_8821AU_linux
make
sudo make install
sudo modprobe rtl8812au

It started working right away giving me almost 100 mb, so I was super happy.

After 3 weeks, the adapter didn't start. I have to say the adapter must be connected to a usb 3 and as soon as it is connected there is alight that comes on, well this time not even the light was coming on.

I tried different things:

• Change the cable to another usb 3 socket, NO SUCCESS
• Change the usb 3 cable, NO SUCCESS
• Connect a external drive to the same socket with the same cable,the hdd was working
• Re-start the computer and try everything again, the same results as before.

So finally I thought that the adapter just had died, as I was still in 30 days Amazon gives you to return the goods, I returned it and, after thinking for a couple of days, I decided to buy it again.

It arrived yesterday, this time the software in the disk was in English, but I thought it would work because the driver was installed, so I plugged it in and ....Oh, surprise!! the light didn't come on, so it doesn't work. I have been reading about this driver and installation in ubuntu this last 48 hours, but most of the places explain what I already did and, to be honest, many of then explain things I don't understand and I am afraid that if it doesn't work I will not be able to undo what I did.

Probably I should delete the driver and do everything again, but I don't know how to do it, or even if that will work.

Any help will be welcome and please, think that I am not a pro with Ubuntu, so make it easy to understand.

Right know I came back to my old dongle with 5.7 mbps right now and if I do a "lsusb" this is what I get:

juan@juan-desktop:~/rtl8812AU_8821AU_linux$ lsusb
Bus 001 Device 005: ID 148f:7601 Ralink Technology, Corp. MT7601U Wireless Adapter
Bus 001 Device 002: ID 145f:013f Trust Megapixel Auto Focus Webcam
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 002: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode)
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 002: ID 058f:6362 Alcor Micro Corp. Flash Card Reader/Writer
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 002: ID 062a:0102 Creative Labs Wireless Keyboard/Mouse Combo [MK1152WC]
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 006 Device 004: ID 0bda:b812 Realtek Semiconductor Corp. 
Bus 006 Device 002: ID 2109:3431 VIA Labs, Inc. Hub
Bus 006 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
I am running Ubuntu 16.04 with kernel:
juan@juan-desktop:~/rtl8812AU_8821AU_linux$ uname -r
4.13.0-37-generic

The file in the small cd with the adapter has a zip file called:

RTL88x2BU_WiFi_linux_v5.2.4.1_22719_COEX20170518-4444.20170613.20170427_TV_ANDROID_6.x_COEX_8822BS-C4242_8822BU-C4242(r1)

Thank you in advance for your help.

I bought a new laptop with a RTL8723AE-BT wireless card, but it seems there is nothing that makes it work.

Realtek usually makes drivers available for its card, but this specific one doesn't have a driver available on Realtek's website. I have tried the following steps in order to try and make it work:

1. Installed ndiswrapper versions 1.57 (from repositories, with dkms) and 1.58rc1 (compiled from source from ndiswrapper's website). Both failed: version 1.57 does not provide an interface for the functions IoWMIOpenBlock and IoWMIQueryAllData. 1.58rc1 has dummy functions in their places, but it fails with a "ioremap failed" message.

   Upon further investigation, I have found that the function NdisMMapIOSpace (ndis.c:808), in 1.58rc1, gets called with physical address and length zero, which causes the failure. Since this function doesn't seem to be called from anywhere in ndiswrapper's code, I'd assume the Windows driver is somehow calling it with bogus parameters.

2. I tried using both the 64-bit version (on my installed system, which uses the x86_64 version of Ubuntu) and the 32-bit version (on a live-USB x86 system with persistence enabled) of the Windows XP driver. The same errors occurred for both versions.

3. Since Realtek's Linux drivers for RTL8192CE/SE/DE actually mention the 8723 chipset in its sources, I tried compiling them and modprobing them, but they don't pick up the card ID (10ec:8723). I also tried to echo 10ec 8723 > new_id on the sysfs (/sys/bus/pci/drivers/rtl8192de) location ( of the driver (actually, on each of them, one at a time), but I get a "Permission denied" error even with sudo. If I sudo su and try again, I get the error bash: echo: write error: Invalid argument.

I have run out of ideas. It's really frustrating to buy a new notebook to use only with Ubuntu and not be able to use its wi-fi connection.

If anyone can shed a light on alternatives, I'd be very thankful.

Edit: lshw -C network output

$ sudo lshw -C network -numeric
  *-network UNCLAIMED     
       description: Network controller
       product: Realtek Semiconductor Co., Ltd. [10EC:8723]
       vendor: Realtek Semiconductor Co., Ltd. [10EC]
       physical id: 0
       bus info: pci@0000:03:00.0
       version: 00
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress cap_list
       configuration: latency=0
       resources: ioport:d000(size=256) memory:f7900000-f7903fff
  *-network
       description: Ethernet interface
       product: RTL8111/8168B PCI Express Gigabit Ethernet controller [10EC:8168]
       vendor: Realtek Semiconductor Co., Ltd. [10EC]
       physical id: 0.2
       bus info: pci@0000:04:00.2
       logical name: eth0
       version: 0a
       serial: 00:90:f5:cd:6d:f7
       size: 100Mbit/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=full firmware=N/A ip=192.168.0.106 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s
       resources: irq:43 ioport:c000(size=256) memory:f2104000-f2104fff memory:f2100000-f2103fff