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Questions[blacklist](ubuntu)

Martin Hope
Vivank
Asked: 2018-11-06 00:05:01 +0800 CST
  • 3

I was following some answer to unblock hard-blocked wifi. I type the following command

sudo tee /etc/modprobe.d/blacklist-hp.conf <<< "blacklist hhp_wmi"

and ended up removing wifi option completely.

Now I want to unblock that any help here how to do it ?

blacklist
Martin Hope
Suncatcher
Asked: 2018-08-20 02:01:28 +0800 CST
  • 3

Everybody knows that any kernel module can be blacklisted via GRUB line:

$ module_name.blacklist=yes

However, not everybody knows the exact name of module to blacklist. And that is the real problem! How to identify it?

For example, during of loading of GRUB I see:

rtlwifi firmware not available

which is quite useless of identification. Neither

rtlwifi.blacklist=yes

nor any other variants worked. How do I figure out the name?

The same thing goes with Bluetooth adapter. It throws:

 [ 9.366503] Bluethooth: hci0: Failed to load rtl_bt/rtl8821a_fw.bin

Of course, rtl_bt/rt18821a_fw.blacklist=yes didn't work.

$ lsmod | grep rtl 
rtl8821ae             233472  0
btcoexist             131072  1 rtl8821ae
rtl_pci                32768  1 rtl8821ae
btrtl                  16384  1 btusb
bluetooth             548864  5 btrtl,btintel,btbcm,btusb
rtlwifi                77824  3 rtl_pci,btcoexist,rtl8821ae
mac80211              778240  3 rtl_pci,rtlwifi,rtl8821ae
cfg80211              622592  2 mac80211,rtlwifi

Any suggestions?

UPDATE: What concerns rtlwifi error lspci -v listed only following

Network controller: Realtek Semiconductor Co., Ltd. RTL8821AE 802.11ac PCIe Wireless Network Adapter
Subsystem: ASUSTeK Computer Inc. RTL8821AE 802.11ac PCIe Wireless Network Adapter
Flags: bus master, fast devsel, latency 0, IRQ 29
I/O ports at e000 [size=256]
Memory at f7d00000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [40] Power Management version 3
Capabilities: [50] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [70] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [140] Device Serial Number 00-e0-4c-ff-fe-87-2b-01
Capabilities: [150] Latency Tolerance Reporting
Capabilities: [158] L1 PM Substates
Kernel driver in use: rtl8821ae
Kernel modules: rtl8821ae

And name rtl8821ae already was in my blacklist without any result, so it seems to be no-go.

What concerns Bluethooth: hci0 error, lspci listed no Bluetooth modules or nothing similar to rtl_bt, maybe because Bluetooth adapter is not a PCI device.

grub2 drivers kernel blacklist
Martin Hope
László Monda
Asked: 2011-07-01 13:22:07 +0800 CST
  • 7

I'd like to blacklist a couple of modules, namely drm, drm_kms_helper, i2c_algo_bit and i915 to forbid my integrated Intel GPU to be used, but to use my Nvidia MXM card instead.

I inserted the following lines into /etc/modprobe.d/blacklist.conf:

blacklist i915
blacklist drm
blacklist drm_kms_helper
blacklist i2c_algo_bit

Despite the above right after rebooting my laptop and typing lsmod I can see these modules loaded.

Why does my blacklist get utterly disrespected and what can I do about it?

blacklist
Martin Hope
Jorge Castro
Asked: 2010-12-10 10:02:23 +0800 CST
  • 14

I have an Acer Timeline 1830T. When I install 10.10 and 11.04 it needs to have the acer-wmi module blacklisted for wireless to work.

I think I need to file a bug on the linux kernel but I am not sure. I've heard the term "quirk" being thrown around by developers when it comes to fixing something so that it works on certain pieces of hardware.

Is this indeed a kernel bug? What steps should I take to ensure that this gets reported so that everyone with my laptop doesn't have to go through this over and over?

bug-reporting kernel blacklist