- Drivers BCM Laptops & Desktops
- Drivers Bcm Laptops & Desktops Desktop
- Drivers Bcm Laptops & Desktops Computers
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Hi everybody, New poster here. I've seen a LOT of issues with people trying to install the drivers for the BCM20702A0 device. In my case, this is a Bluetooth adapter from Insignia, but it looks like this is common across many devices. I downloaded the.EXE from Broadcom and it gets hung up while. Having an issue with your display, audio, or touchpad? Whether you're working on an Alienware, Inspiron, Latitude, or other Dell product, driver updates keep your device running at top performance. Step 1: Identify your product above. Step 2: Run the detect drivers scan to see available updates. Step 3: Choose which driver updates to install.
Updated: September 13, 2019
Here's an interesting problem. Several weeks ago, I tested Manjaro 18.0.4 Illyria on my HP Pavilion laptop, and I've come across an interesting phenomenon. The laptop is equipped with a Broadcom Wireless card, and in the live session, both with free and nonfree drivers, the network was up and running okay. However, after the installation, I had no Wireless.
Looking at system looks, I found an error that said WLC_SCAN error (-22). Once I hit the Intertubes with this search, all hell broke loose. I found dozens of Arch and Manjaro forum posts talking about this issue. There were some solutions offered, but they were either ineffective or very difficult to implement. So I decided to try to fix this on my own, hence this guide. Follow me.
Problem in more detail
As it happens, in my case, I did have the Wireless icon showing up, and the Network Manager did list a number of access points in the vicinity of the laptop. But when I tried to connect, nothing would happen. I'd type in the password, wait, and then, the selected access point would simply disappear from the list, and no connection would be established. Running dmesg, I saw the following text:
[ 526.274664] IPv6: ADDRCONF(NETDEV_UP): wlo1: link is not ready
[ 526.276614] ERROR @wl_cfg80211_scan :
[ 526.276619] WLC_SCAN error (-22)
I did have a Wireless network card identified (up and running). The (free) wl kernel module was loaded into memory. However, the system was unable to establish a connection. Turning off IPv6 did not help - this is just an artifact of not using IPv6 on the router(s).
I did attempt some of the quick fixes suggested in the various threads. One of them was to use the hardware button on the laptop case to turn the Wireless antenna on/off, and then check the status with the rfkill command. Some people reported having this help them 'unblock' their cards. It didn't work for me.
rfkill list
0: hp-wifi: Wireless LAN
Soft blocked: no
Hard blocked: yes
1: hp-bluetooth: Bluetooth
Soft blocked: yes
Hard blocked: yes
2: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
I didn't want to start fiddling with yaourt at this point, trying broadcom-wl-dkms, and other tips and tricks mentioned. I wanted to see if I could resolve this with minimal changes to my system state, and hopefully, no need for any downloads via wired network (or similar).
Solution
Looking at other distributions I've used on this machine - including the somewhat problematic Fedora 30, as well as others that did have good, reasonable network connectivity and speed, I realized that I should be using the b43 kernel modules for the Wireless device rather than the wl blob. The first step was to manually unload the existing module (wl) and load the b43 one:
sudo modprobe -r wl
sudo modprobe b43
Once I did this, the problem changed. I no longer had Wireless at all, even though the b43 module has been loaded into memory. So I checked the system messages once again, and I saw the following error:
[ 120.170582] Support for cores revisions 0x17 and 0x18 disabled by module param allhwsupport=0. Try b43.allhwsupport=1
[ 120.170590] b43: probe of bcma0:1 failed with error -524
[ 120.170611] Broadcom 43xx driver loaded [ Features: PNLS ]
As the error says, I needed to load the module with different parameters:
sudo modprobe b43 allhwsupport=1
Success! Once I did this, the Wireless card came back to life, I was able to connect and use the network just fine. So the problem is solved - but we still need to understand why and then auto-enable the use of the b43 module on boot.
Blacklisted modules
For some reason, both the free and nonfree editions of Manjaro Illyria have the b43 module blacklisted, which would explain why they wouldn't be loaded on boot. You can check this by examining the contents of the file named linux419-broadcom-wl.conf under /etc/modprobe.d. Inside, the whole range of relevant module was listed, including b43, b43legacy, bcma, ssb, and others.
Enable b43 loading on boot
Now that we have a manual fix, we need to make it permanent. This requires editing two files. One, you need to add b43 to the list of modules to boot under /etc/modules-load.d/modules.conf. If you cat the contents of this files, it will show something like:
# List of modules to load at boot
You need to add b43 underneath, like this:
# List of modules to load at boot
b43
But that's not all. We need to add a module loading option under /etc/modprobe.d. This is similar to what we did with the Realtek Wireless card to make it work on older 3.X kernels. You need to create a configuration file with the following format: 'module name'.conf. In this case, b43.conf. Inside this file, we need the allhwsupport option:
options b43 allhwsupport=1
To verify, the file should look like this:
cat /etc/modprobe.d/b43.conf
options b43 allhwsupport=1
And that's it. Reboot, and you will have your Wireless up and running.
Conclusion
There we go. This wasn't trivial. But I find this more elegant than manually compiling and building modules, and having to use a separate network just to grab the necessary packages. The fact there are also two different directories you need to use to enable the module loading also makes this a bit more complicated.
Anyway, the long-term solution is to have the distro automatically detect potentially 'bad' hardware already in the live stage and make adjustments accordingly - install compilation tools and headers, modify the system configuration in advance, and such, so when the user logs in the first time, everything works. I hope you found this tutorial useful. Take care, Manjarians.
Cheers.
-->Drivers BCM Laptops & Desktops
The Windows ACPI driver, Acpi.sys, is an inbox component of the Windows operating system. The responsibilities of Acpi.sys include support for power management and Plug and Play (PnP) device enumeration. On hardware platforms that have an ACPI BIOS, the HAL causes Acpi.sys to be loaded during system startup at the base of the device tree. Acpi.sys acts as the interface between the operating system and the ACPI BIOS. Acpi.sys is transparent to the other drivers in the device tree.
Other tasks performed by Acpi.sys on a particular hardware platform might include reprogramming the resources for a COM port or enabling the USB controller for system wake-up.
In this topic
ACPI devices
The hardware platform vendor specifies a hierarchy of ACPI namespaces in the ACPI BIOS to describe the hardware topology of the platform. For more information, see ACPI Namespace Hierarchy.
For each device described in the ACPI namespace hierarchy, the Windows ACPI driver, Acpi.sys, creates either a filter device object (filter DO) or a physical device object (PDO). If the device is integrated into the system board, Acpi.sys creates a filter device object, representing an ACPI bus filter, and attaches it to the device stack immediately above the bus driver (PDO). For other devices described in the ACPI namespace but not on the system board, Acpi.sys creates the PDO. Acpi.sys provides power management and PnP features to the device stack by means of these device objects. For more information, see Device Stacks for an ACPI Device.
A device for which Acpi.sys creates a device object is called an ACPI device. The set of ACPI devices varies from one hardware platform to the next, and depends on the ACPI BIOS and the configuration of the motherboard. Note that Acpi.sys loads an ACPI bus filter only for a device that is described in the ACPI namespace and is permanently connected to the hardware platform (typically, this device is integrated into the core silicon or soldered to the system board). Not all motherboard devices have an ACPI bus filter.
All ACPI functionality is transparent to higher-level drivers. These drivers must make no assumptions about the presence or absence of an ACPI filter in any given device stack.
Acpi.sys and the ACPI BIOS support the basic functions of an ACPI device. To enhance the functionality of an ACPI device, the device vendor can supply a WDM function driver. For more information, see Operation of an ACPI Device Function Driver.
An ACPI device is specified by a definition block in the system description tables in the ACPI BIOS. A device's definition block specifies, among other things, an operation region, which is a contiguous block of device memory that is used to access device data. Only Acpi.sys modifies the data in an operation region. The device's function driver can read the data in an operation region but must not modify the data. When called, an operation region handler transfers bytes in the operation region to and from the data buffer in Acpi.sys. The combined operation of the function driver and Acpi.sys is device-specific and is defined in the ACPI BIOS by the hardware vendor. In general, the function driver and Acpi.sys access particular areas in an operation region to perform device-specific operations and retrieve information. For more information, see Supporting an Operation Region.
ACPI control methods
ACPI control methods are software objects that declare and define simple operations to query and configure ACPI devices. Control methods are stored in the ACPI BIOS and are encoded in a byte-code format called ACPI Machine Language (AML). The control methods for a device are loaded from the system firmware into the device's ACPI namespace in memory, and interpreted by the Windows ACPI driver, Acpi.sys.
To invoke a control method, the kernel-mode driver for an ACPI device initiates an IRP_MJ_DEVICE_CONTROL request, which is handled by Acpi.sys. For drivers loaded on ACPI-enumerated devices, Acpi.sys always implements the physical device object (PDO) in the driver stack. For more information, see Evaluating ACPI Control Methods.
ACPI specification
The Advanced Configuration and Power Interface Specification (ACPI 5.0 specification) is available from the Unified Extensible Firmware Interface Forum website.
Revision 5.0 of the ACPI specification introduces a set of features to support low-power, mobile PCs that are based on System on a Chip (SoC) integrated circuits and that implement the connected standby power model. Starting with Windows 8 and later versions, the Windows ACPI driver, Acpi.sys, supports the new features in the ACPI 5.0 specification. For more information, see Windows ACPI design guide for SoC platforms.
ACPI debugging
System integrators and ACPI device driver developers can use the Microsoft AMLI debugger to debug AML code. Because AML is an interpreted language, AML debugging requires special software tools.
For more information about the AMLI debugger, see ACPI Debugging.
Microsoft ACPI source language (ASL) compiler
For information about compiling ACPI Source Language (ASL) into AML, see Microsoft ASL Compiler.
Drivers Bcm Laptops & Desktops Desktop
Version 5.0 of the Microsoft ASL compiler supports features in the ACPI 5.0 specification.
The ASL compiler is distributed with the Windows Driver Kit (WDK).
Drivers Bcm Laptops & Desktops Computers
The ASL compiler (asl.exe) is located in the ToolsarmACPIVerify, Toolsarm64ACPIVerify, Toolsx86ACPIVerify, and Toolsx64ACPIVerify directories of the installed WDK, for example, C:Program Files (x86)Windows Kits10Toolsx86ACPIVerify.