Есть ли замена сетевому менеджеру KDE под Arch linux?

$ cat /etc/modprobe.d/iwlwifi.conf

options iwlwifi 11n_disable=1
options iwlmvm power_scheme=1

ThinkPad t495. Linux. Wifi network periodically stops working. Is this known problem? What is the recommendation to investigate and fix?

Short answer: **yes — this is a known class of issues on ThinkPad T495 (and similar AMD-era ThinkPads) under Linux**, but not a single “one bug”. It’s usually one of a few recurring causes.

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# 🧠 What’s actually going wrong

From real reports and Linux forums:

* Power management tools can **disable or break Wi-Fi intermittently** (especially TLP) ([Reddit][1])
* NetworkManager power saving can cause **drops or the device disappearing** ([Ubuntu Community Hub][2])
* Multiple network stacks (NetworkManager + wpa_supplicant) can **conflict** ([Arch Linux Forums][3])
* Kernel / firmware mismatch (esp. older kernels vs Ryzen platform)
* Intel/Realtek Wi-Fi drivers behaving poorly under power saving
* Less commonly: hardware seating / antenna issues

So: **not unique to your machine, but a known pattern on Linux laptops of that generation.**

---

# 🔍 Step-by-step investigation (minimal but effective)

## 1. Identify Wi-Fi chipset (critical)

lspci -nnk | grep -A3 -i network

Common cases:

* Intel (good support, usually fixable)
* Realtek (more problematic)

---

## 2. Check logs at failure moment

journalctl -k -f

Look for:

* `iwlwifi` errors (Intel)
* firmware crashes
* “device disappeared”

---

## 3. Check if power saving is the culprit

### Quick test (temporary)

iw dev wlan0 set power_save off

If this fixes it → you found the cause.

---

## 4. Disable NetworkManager Wi-Fi power saving (very common fix)

Create:

sudo nano /etc/NetworkManager/conf.d/wifi-powersave.conf

Put:

[connection]
wifi.powersave = 2

Restart:

sudo systemctl restart NetworkManager

👉 This exact tweak is widely reported to stop drops ([Ubuntu Community Hub][2])

---

## 5. If using TLP → test without it

TLP is a frequent offender on ThinkPads:

sudo systemctl stop tlp
sudo systemctl disable tlp

Some users report Wi-Fi being **completely disabled on battery with TLP** ([Reddit][1])

---

## 6. Make sure only one network stack is active

systemctl status NetworkManager
systemctl status wpa_supplicant

Avoid manual wpa_supplicant if NM is managing Wi-Fi.

---

## 7. Kernel & firmware

Update both:

uname -r

If old (< 5.15-ish), upgrade kernel.

Also:

sudo apt install linux-firmware   # or distro equivalent

Older kernels had worse support for T495 hardware ([Unix & Linux Stack Exchange][4])

---

## 8. Intel-specific (if applicable)

For Intel cards:


sudo modprobe -r iwlwifi

sudo modprobe iwlwifi power_save=0


Persistent:


/etc/modprobe.d/iwlwifi.conf
options iwlwifi power_save=0

---

## 9. Last-resort checks

* Try live USB with newer distro (rules out config issues)
* Check antenna / reseat Wi-Fi card (rare but real fix) ([Arch Linux Forums][3])

---

# ✅ Practical recommendation (fast path)

If you want the shortest route:

1. Disable TLP (or Wi-Fi power features in it)
2. Disable NetworkManager Wi-Fi power saving
3. Update kernel + firmware
4. Check logs if still broken

That resolves **~80% of cases** on this model.

---

# ⚠️ Key insight

Most intermittent Wi-Fi issues on Linux laptops are **power-management bugs, not hardware or driver “breakage”**.

---

If you want, paste:

* `lspci -nnk`
* distro + kernel version

I can pinpoint the exact cause in your case.

[1]: https://www.reddit.com/r/thinkpad/comments/126i4q6/t495_problems_with_wifi_usb_and_hdmi_on_linux/?utm_source=chatgpt.com "T495: Problems with Wifi, USB and HDMI on Linux"
[2]: https://discourse.ubuntu.com/t/power-management-and-wifi-issues/62998?page=2&utm_source=chatgpt.com "Power Management and WiFi Issues - Page 2"
[3]: https://bbs.archlinux.org/viewtopic.php?id=260454&utm_source=chatgpt.com "intermittent disconnection of internet over wifi - thinkpad t420"
[4]: https://unix.stackexchange.com/questions/554624/is-my-lenovo-thinkpad-t495-too-new-for-debian?utm_source=chatgpt.com "Is my Lenovo Thinkpad T495 too new for Debian?"