Wifi Adapter is not recognized when Centos 7 updates
I have a Dell Laptop with a Qualcomm Atheros QCA9377 Network Adapter on Centos 7
When the system updated, the network adapter no longer works because the OS can't see it. However, when I use the command Code:
lspci | grep Network Quote:
Why isn't it connecting? I have searched for solutions to this problem and it seems to be that the driver needs to be re-installed, but no drivers for Linux exist for that particular adapter. Has anybody actually had this problem and fixed it? |
Actually, that command only reports that a network-class device is present, not that driver is loaded. Instead do
Code:
lspci -nnk |grep -iA3 net Code:
dmesg | egrep -i "ath|firmware" Code:
ip link |
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Quote:
Code:
lspci -nnk |grep -iA3 net Code:
16:00.0 Network controller [0280]: Qualcomm Atheros QCA9377 802.11ac Wireless network Adapter [168c:0042] (rev 31) The output of the command Code:
dmesg | egrep -i "ath|firmware" Code:
[ 0.012941] [Firmware Bug]: cpu 0, invalid threshold interrupt offset 1 for bank 4, block 0 (MSR00000413=0xd000000001000000) Thank you for your help. |
Could this be related to the Meltdown CPU Vulnerability CVE-2017-5754 on Linux?
https://www.cyberciti.biz/faq/patch-...17-5754-linux/ |
I found a firmware update on GitHub
firmware-5.bin_WLAN.TF.1.0-00023-QCATFSWPZ-1 I have no idea how I can install it though. |
With something like
Code:
sudo cp firmware-5.bin_WLAN.TF.1.0-00023-QCATFSWPZ-1 /lib/firmware/ath10k/QCA9377/hw1.0/firmware-5.bin However, you need to be sure that this is suitable for your particular chipset, and I have no idea whether this will fix the issue you've encountered. Uoi might want to subscribe/add to the CentOS thread I linked to. |
Well, nobody seems to know how to fix this so maybe it's not fixable.
I checked out this Bugzilla page https://bugzilla.redhat.com/show_bug.cgi?id=1527137 Apparently, the latest Qualcomm has is firmware-5. These new updates require firmware-6. At any rate can anybody recommend a good USB wifi adapter that plays nicely with Centos 7? |
Try the following workaround, as described in this Gentoo thread...
https://forums.gentoo.org/viewtopic-...2-start-0.html Code:
cd lib/firmware/ath10k/QCA9377/hw1.0/ Code:
ls Code:
board-2.bin board.bin firmware-5.bin firmware-6.bin notice_ath10k_firmware-5.txt notice_ath10k_firmware-6.txt So Code:
dmesg | grep -i ath10k Code:
ath10k_pci 0000:16:00.0: firmware ver WLAN.TF.1.0-00002-QCATFSWPZ-5 api 5 features ignore-otp crc32 c3e0d04f According to that thread, the firmware-6 files always seem to result in non-working wifi for these devices. Hope that does the trick. |
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Thank You! |
Glad to have been of assistance.
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Also a big thank from me.
After searching where I expected to find the solution I found it here. I also run Fedora aswell where I expect to have problems not on Centos. Dennis |
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Glad that you found this thread, and it was of help to you. :)
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Big thank you!
Thank you the help. It worked like a charm.
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