Здравствуйте! у меня проблема с сетевой картой 9260. В двухдиапазонном режиме очень сильно режется скорость пропускной способности, хотя канальная скорость 867 Мбит/с, если переключить только на 5 ГГц или 2.4 ГГц проблем не наблюдается.

[SGerm5]

Что приложить, чтобы диагностировать данную проблему?

[Wanner_G_Intel]

Hello SGerm5,

Thank you for submitting your question on this Intel® Community.

To better assist you, we would like to have more information about your system configuration.

• Do you know when this issue started happening?
• Did the Intel® Wireless Adapter come with the computer?
• How are you measuring the speed of adapter? Could you please attach pictures?

• Generate a system report with the Intel® System Support Utility (Intel® SSU) and attach it to this thread.

1. Intel® SSU Download link
2. Open the application and click on "Scan" to see the system and device information. By default, Intel® SSU will take you to the "Summary View".
3. Click on the menu where it says "Summary" to change to "Detailed View".
4. To save your scan, click on "Next", then "Save".

Note: Our support is only provided in English. We may not be able to translate screenshots attached to the thread. To better assist you, we use a translation tool embedded on this Intel® Community.

Wanner G.

Intel Customer Support Technician

[SGerm5]

Когда начала происходить проблема, сказать не могу. Для теста использовался iperf3. Сетевая карта не поставлялась с компьютером.

[SGerm5]

posted a file.

[SGerm5]

posted a file.

[Wanner_G_Intel]

Hello SGerm5,

Thank you for your response.

If we understood well, the wireless adapter was installed/upgraded after purchasing the computer. Please confirm this information.

Based on the details provided, we recommend that you perform a Clean Installation of Wireless Drivers (Bluetooth and Wi-Fi). Original Equipment Manufacturer (OEM) drivers first.

Step 1: Get the latest system-specific driver from your computer manufacturer support.

It seems that Lenovo* has drivers compatible with your current system configuration. Try to use these drivers.

330-15IKB (Type 81DE)

If you require further details about driver compatibility, we recommend that you contact Lenovo* support.

Step 2: Uninstall your Wi-Fi driver.

Windows* may have an inbox Wi-Fi driver for your wireless adapter. You can't uninstall an inbox driver (you won't see the "Delete the driver software for this device" option). Proceed to the next step if you start seeing the same version of the driver installed automatically after it’s uninstalled.

1. Go to Device Manager.
2. Expand the Network Adapters category.
3. Right-click your Intel Wireless Adapter/Bluetooth and choose to uninstall it.
4. Make sure to select the option to Delete the driver software for this device.
5. Restart your computer.

Step 3: Driver installation.

Locate the drivers you downloaded back in Step 1. Run as administrator, and follow the wizard to completion.

If the problem persists, try to install the generic drivers available at our site using the clean install steps.

• Wi-Fi Driver Version: 21.70.0
• Bluetooth® driver Version: 21.70.0

Wanner G.

Intel Customer Support Technician

[SGerm5]

Выполнил все по вашей инструкции. Изменений нет, в двухдиапазонном режиме скорость низкая.

[Wanner_G_Intel]

Hello SGerm5,

Thank you for your response. We will look into this issue.

Could you please let us know the Advanced Intel® Wireless Adapter Setting that you are modifying?

Wanner G.

Intel Customer Support Technician

[SGerm5]

В этом режиме 5 ГГц работает прекрасно

[SGerm5]

В режиме 802.11a, 802.11b, 802.11g (по умолчанию) - режет скорость в 5 ГГц.

[Wanner_G_Intel]

Hello SGerm5,

Thank you for your response.

We will update this thread soon.

Wanner G.

Intel Customer Support Technician

[SGerm5]

Спасибо! Хорошо. Жду.

[Wanner_G_Intel]

Hello SGerm5,

We would like to provide an update.

Based on the information provided on this thread, it seems that the wireless integration is most likely causing this issue.

Wireless upgrade/integration may or may not work due to the following reasons:

1. Hardware/software compatibility issues or dependencies.

2. Manufacturer limitations.

3. Driver limitations.

Regulatory Information Regarding Wireless Hardware Installation or Upgrade

In this scenario, we recommend that you contact your Original Equipment Manufacturer (OEM) to make sure your computer is up to date and working under design specifications.

Wanner G.

Intel Customer Support Technician

[SGerm5]

А как можно диагностировать несовместимость? Поддержка lenovo говорит что у них нет ограничений каких либо.

[SGerm5]

На роуторе 2 чипа работающие отдельно друг от друга. В раздельных режимах ж проблем не нет

[Wanner_G_Intel]

Hello SGerm5,

We are glad to know that your Original Equipment Manufacturer (OEM) was able to provide you with more information about hardware compatibility.

If we understood correctly, you mentioned that the Intel® Wireless-AC 9260 did not come with the computer. For this reason, if the problem started happening after installing the adapter in your computer, our recommendation is that you contact your OEM to check the health of your computer.

It is worth mentioning that your computer should work when using default settings.

Wanner G.

Intel Customer Support Technician