On Tuesday, 14 July 2020 18:20:39 BST Walter Dnes wrote: > On Tue, Jul 14, 2020 at 10:05:52AM +0100, Michael wrote
> > Does dmesg reveal anything untoward in the kernel failing to find > > or load this firmware? > > Still no wireless, but one bit of progress. It seems that the kernel > does *NOT* like using subdirectories below /lib/firmware. I copied the > ucode file to /lib/firmware and changed the path appropriately before > building the kernel. Now dmesg at bootup shows... That's OK, up to a point ... > [ 0.757370] Intel(R) Wireless WiFi driver for Linux > [ 0.757372] Copyright(c) 2003- 2015 Intel Corporation > [ 0.757478] iwlwifi 0000:03:00.0: can't disable ASPM; OS doesn't have > ASPM control [ 0.757877] iwlwifi 0000:03:00.0: loaded firmware version > 8.83.5.1 build 33692 op_mode iwldvm [ 0.757963] iwlwifi 0000:03:00.0: > CONFIG_IWLWIFI_DEBUG disabled [ 0.757967] iwlwifi 0000:03:00.0: > CONFIG_IWLWIFI_DEBUGFS disabled [ 0.757970] iwlwifi 0000:03:00.0: > CONFIG_IWLWIFI_DEVICE_TRACING disabled [ 0.757973] iwlwifi 0000:03:00.0: > Detected Intel(R) WiFi Link 5100 AGN, REV=0x54 [ 0.761128] [drm] HPD > interrupt storm detected on connector DP-3: switching from hotplug > detection to polling [ 0.762028] fbcon: i915drmfb (fb0) is primary > device > [ 0.795312] ieee80211 phy0: Selected rate control algorithm 'iwl-agn-rs' Normally you should see something like this following the above entries: [ 16.017699] iwlwifi 0000:04:00.0 wlp4s0: renamed from wlan0 [ 16.167105] EXT4-fs (sda4): mounted filesystem with ordered data mode. Opts: (null) [ 18.384509] iwlwifi 0000:04:00.0: Radio type=0x1-0x2-0x0 [ 18.500644] iwlwifi 0000:04:00.0: Radio type=0x1-0x2-0x0 > > Also, make sure the wireless NIC is enabled in the BIOS and powered > > up by toggling the appropriate Fn key combo, e.g. Fn+F5 or whatever > > it is on your laptop. > > It's enabled in BIOS and the Gentoo minimal install usb stick brings > up wlan0 just fine. In my first post, I listed what kernel settings I > had set. Is there anything else required that I'm missing? After all > these years of hard-wired, I'm still a newbie at wireless, so I could be > missing something glaringly obvious. In addition to your kernel selections I also have: CONFIG_RFKILL=y CONFIG_RFKILL_LEDS=y CONFIG_RFKILL_INPUT=y CONFIG_RFKILL_GPIO=y ... CONFIG_WLAN=y # CONFIG_WLAN_VENDOR_ADMTEK is not set # CONFIG_WLAN_VENDOR_ATH is not set # CONFIG_WLAN_VENDOR_ATMEL is not set # CONFIG_WLAN_VENDOR_BROADCOM is not set # CONFIG_WLAN_VENDOR_CISCO is not set CONFIG_WLAN_VENDOR_INTEL=y # CONFIG_IPW2100 is not set # CONFIG_IPW2200 is not set # CONFIG_IWL4965 is not set # CONFIG_IWL3945 is not set CONFIG_IWLWIFI=m CONFIG_IWLWIFI_LEDS=y CONFIG_IWLDVM=m # CONFIG_IWLMVM is not set CONFIG_IWLWIFI_OPMODE_MODULAR=y As you can see I'm using modules and the kernel loads the firmware without me including it in the kernel config. Not sure if there is a difference between built-in and module configuration for the Wireless devices, but you could try it. If you have not built RFKILL in your kernel I suggest you do so and reboot. Finally, may be worth checking the troubleshooting section here: https://wiki.gentoo.org/wiki/Iwlwifi HTH.
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