Realtek 8723DE don't work on CentOS 7

[Agamyx]

Hi,

i have problems wirth activating my wireless card from my HP Notebook. The card don't appear on the network manager.

lspci says:

Code: Select all

00:00.0 Host bridge: Intel Corporation Device 5904 (rev 02)
00:02.0 VGA compatible controller: Intel Corporation Device 5916 (rev 02)
00:04.0 Signal processing controller: Intel Corporation Skylake Processor Thermal Subsystem (rev 02)
00:14.0 USB controller: Intel Corporation Sunrise Point-LP USB 3.0 xHCI Controller (rev 21)
00:14.2 Signal processing controller: Intel Corporation Sunrise Point-LP Thermal subsystem (rev 21)
00:16.0 Communication controller: Intel Corporation Sunrise Point-LP CSME HECI #1 (rev 21)
00:17.0 SATA controller: Intel Corporation Sunrise Point-LP SATA Controller [AHCI mode] (rev 21)
00:1c.0 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #5 (rev f1)
00:1c.5 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #6 (rev f1)
00:1f.0 ISA bridge: Intel Corporation Device 9d4e (rev 21)
00:1f.2 Memory controller: Intel Corporation Sunrise Point-LP PMC (rev 21)
00:1f.3 Audio device: Intel Corporation Device 9d71 (rev 21)
00:1f.4 SMBus: Intel Corporation Sunrise Point-LP SMBus (rev 21)
01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 15)
02:00.0 Network controller: Realtek Semiconductor Co., Ltd. Device d723

I tried several installation tips like this one:

http://discoverunix.blogspot.de/2017/07 ... edora.html

But my card still don't work. Does anyone here have an idea for my?

[TrevorH]

Please post the output of lspci -nn | grep -i net (your current lspci output doesn't include the vital vendor/device id info).

Which portion of those instructions did you follow? The part about adding parameters? That might work. Or the part about rebuilding it from source which is a thoroughly bad idea?

[Agamyx]

thanks for reply.

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01:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 15)
02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. Device [10ec:d723]

i just tried the first way with the parameters because the second way seems not a good idea for me

[TrevorH]

That card doesn't appear to be supported by either of the rtl8723* modules that the CentOS kernel supplies. I checked using grep -i 10ec /lib/modules/3.10.0-693.17.1.el7.x86_64/modules.* | grep -i d723 which returns no output for me. Are either rtl8723ae or rtl8723be listed in the output from the lsmod command (run as root)? If not then you could try using modprobe rtl8723ae then check the output of dmesg for any errors - repeat for rtl8723be though I am not expecting either of them to actually work. If they are already loaded then perhaps try modprobe -r on them to remove them then load them again just so you can see any errors in the log that it might emit as it loads.

If neither load and recognise your card then you're most likely going to need a newer copy of the driver than we supply. Your best bet for this is to ask the nice people at ELRepo if they can build and publish a kmod-rtl8723 package including the most recent driver. You could build this yourself from source using the instructions in that article but there are significant drawbacks to doing it that way - first it's very likely to overwrite the distro copy of the driver with a foreign one. Second, it'll need to be rebuilt each and every time there is a kernel update as the old one will refuse to load with the newer kernel. The ELRepo guys are experienced and package in such a way to avoid both of those issues.