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Poor wifi performance on HP 250 G4

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texchuck
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Poor wifi performance on HP 250 G4

#1 Postby texchuck » Wed Jan 25, 2017 8:02 am

I purchased a new HP 250 G4 notebook sans OS and made it an MX-16 64-bit Linux machine. The wifi reception on this laptop is very poor. At home, I use it adjacent to the wifi router, so generally have no problem, though even there the signal indicator shows about 2/3 strength. But when I use it in a building with wifi access, if often disconnects and shows marginal reception, or will not connect at all. Other PCs, tablets, etc. on the same table work fine. A brief search online showed recommendations to use the "High Performance" setting in Windows rather than the standard HP settings. I don't know if that would help, but don't know how to increase power to the wifi card with Linux (and I don't have Windows installed to try the setting out). The power manager in MX does not address this issue, if, indeed, there are alternate power settings to use. Is there a way to adjust to something like "High Performance" in MX? Or, perhaps, I should try an external USB wifi dongle and give up on the built-in HP stuff?

Thanks anyone who knows!

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Jerry3904
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Re: Poor wifi performance on HP 250 G4

#2 Postby Jerry3904 » Wed Jan 25, 2017 8:07 am

Could you please give us the output of this command as regular user:

Code: Select all

inxi -Nxxx
Production: 4.13.0-1-amd64, MX-17, AMD FX-4130 Quad-Core, GeForce GT 630/PCIe/SSE2, 8 GB, Kingston SSD 120 GB and WesternDigital 1TB
Testing: AAO 722: 4.13.0-1-386. MX-17, AMD C-60 APU, 4 GB

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dolphin_oracle
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Re: Poor wifi performance on HP 250 G4

#3 Postby dolphin_oracle » Wed Jan 25, 2017 9:18 am

that laptop comes up in a lot of ubuntu hits. Please provide the code Jerry asked for above, but if its the rtl8723be driver in use, it is very possible that your wifi-antenna is hooked up to the wrong antenna lead on wifi board. The windows driver auto-detects the antenna, but the linux driver does not.

a quick modinfo rtl8723be shows an option to force select the antenna. try this

create a file called /etc/modprobe.d/50-rtl8723be.conf with the following contents:

Code: Select all

options rtl8723be ant_sel=2


and reboot and see if anything improves. You can also try ant_sel=1 to force to the other lead connection if the "2" doesn't work.
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texchuck
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Re: Poor wifi performance on HP 250 G4

#4 Postby texchuck » Wed Jan 25, 2017 10:02 am

dolphin_oracle,

Thank you for the suggestion. It doesn't seem to make any difference (with 2 or 1), but I haven't tried it in the building where I have the problem. At the moment, the laptop is located within 2 feet of the router and the signal strength indicator fluctuates between 100% and 75% (mostly the latter). I think you may be onto something, but perhaps a different driver. The inxi command shows "Realtek RTL8101E/RTL8102E" . Perhaps I should try this with one (or both) of those, or would they be combined as shown (or lower case)?

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Re: Poor wifi performance on HP 250 G4

#5 Postby dolphin_oracle » Wed Jan 25, 2017 10:09 am

texchuck wrote:dolphin_oracle,

Thank you for the suggestion. It doesn't seem to make any difference (with 2 or 1), but I haven't tried it in the building where I have the problem. At the moment, the laptop is located within 2 feet of the router and the signal strength indicator fluctuates between 100% and 75% (mostly the latter). I think you may be onto something, but perhaps a different driver. The inxi command shows "Realtek RTL8101E/RTL8102E" . Perhaps I should try this with one (or both) of those, or would they be combined as shown (or lower case)?


Are you sure that's not your wired?

please post the entire output of inxi -Nxxx please.
http://www.youtube.com/runwiththedolphin
eeepc 904ha antix 15 32 bit (streaming media player)
acer c720p chromebook - chromeos / MX15-64 (custom snapshot) live USB.
lenovo s21e - antiX-16 MX16(live-usb)

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Jerry3904
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Re: Poor wifi performance on HP 250 G4

#6 Postby Jerry3904 » Wed Jan 25, 2017 10:11 am

Rejuvenation: defective trees and planting sites
Thanks, but what we need is the actual output of the command. Here is mine for instance (put inside code tags):

Code: Select all

$ inxi -Nxxx
Network:   Card: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
           driver: r8169 v: 2.3LK-NAPI port: e800 bus-ID: 02:00.0 chip-ID: 10ec:8168
Production: 4.13.0-1-amd64, MX-17, AMD FX-4130 Quad-Core, GeForce GT 630/PCIe/SSE2, 8 GB, Kingston SSD 120 GB and WesternDigital 1TB
Testing: AAO 722: 4.13.0-1-386. MX-17, AMD C-60 APU, 4 GB

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texchuck
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Re: Poor wifi performance on HP 250 G4

#7 Postby texchuck » Wed Jan 25, 2017 10:16 am

Jerry and dolphin-

I have been responsing with the "Quick Reply" option, but those responses don't seem to appear in the chain. So, I am confirming my responses here, just to make sure they really do get posted.

First, the output from the inxi command:
Network: Card-1: Realtek RTL8101E/RTL8102E PCI Express Fast Ethernet controller
driver: r8169 v: 2.3LK-NAPI port: 3000 bus-ID: 02:00.0 chip-ID: 10ec:8136
Card-2: Broadcom BCM43142 802.11b/g/n driver: wl bus-ID: 03:00.0 chip-ID: 14e4:4365


Second, the suggestion for the .conf file didn't seem to make any difference, at least from my home location. The laptop is within 2 feet of the router, but still fluctuates between 100% and 75% wifi power. But perhaps the driver is a variation of rtl8101E or rt8102E? This seems like a resonable avenue to pursue, but not sure what the driver would be called.

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Jerry3904
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Re: Poor wifi performance on HP 250 G4

#8 Postby Jerry3904 » Wed Jan 25, 2017 10:27 am

Code: Select all

Card-2: Broadcom BCM43142 802.11b/g/n driver: wl
That's what we needed to see, thanks. You might want to try switching drivers, using the MX Broadcom Manager to blacklist wl first. You can also run it the other way, blacklisting the b43 driver. In both cases, you will need to reboot.

BTW: you haven't upgraded your kernel by any chance have you?
Production: 4.13.0-1-amd64, MX-17, AMD FX-4130 Quad-Core, GeForce GT 630/PCIe/SSE2, 8 GB, Kingston SSD 120 GB and WesternDigital 1TB
Testing: AAO 722: 4.13.0-1-386. MX-17, AMD C-60 APU, 4 GB

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texchuck
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Re: Poor wifi performance on HP 250 G4

#9 Postby texchuck » Wed Jan 25, 2017 10:49 am

b43 was already blacklisted. I swapped it with wl (blacklisted wl, unblacklisted b43) and wifi didn't work after rebooting. When I returned to the MX manager, b43 and a variant of b43 had vanished from the lists. I unblacklisted wl and wifi immediately started. Don't know what happened to b43. It is no longer listed anywhere.

The kernel is the one that came with MX-16 (64). I have incorporated all of the MX updates as they have come along, but not modified the kernel unless the updates do so.

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dolphin_oracle
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Re: Poor wifi performance on HP 250 G4

#10 Postby dolphin_oracle » Wed Jan 25, 2017 10:51 am

Second, the suggestion for the .conf file didn't seem to make any difference, at least from my home location. The laptop is within 2 feet of the router, but still fluctuates between 100% and 75% wifi power. But perhaps the driver is a variation of rtl8101E or rt8102E? This seems like a resonable avenue to pursue, but not sure what the driver would be called.


ignore my response on the rtl driver. you aren't using it in your model of that laptop, but you do have a broadcom. the .conf file info I gave you will not work with that driver.

you could try switching to the opensource b43 driver, but supposedly, the only broadcom driver that supports your part is the wl driver that is in use already.

there are a lot of complaints about that particular card.

when switchting othe opensource drivers, its easier to unblacklist everything and only blacklist wl. there are a few other modules that need to be unblacklisted, but I don't quit remember what they are. the open-source ones won't conflict with each other though, just wl.


***edit*** this guy opened up his laptop and physically switched the antenna leads

https://www.youtube.com/watch?v=JsJ1Jw7h2Pc
Last edited by dolphin_oracle on Wed Jan 25, 2017 11:06 am, edited 1 time in total.
http://www.youtube.com/runwiththedolphin
eeepc 904ha antix 15 32 bit (streaming media player)
acer c720p chromebook - chromeos / MX15-64 (custom snapshot) live USB.
lenovo s21e - antiX-16 MX16(live-usb)


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