Date: Sat, 16 Jan 2021 15:11:28 -0300 From: "Dr. Rolf Jansen" <freebsd-rj@obsigna.com> To: Emmanuel Vadot <manu@bidouilliste.com> Cc: freebsd-arm@freebsd.org Subject: Re: GENERICSD snapshot on a BBB has issues with loading the if_rtwn_usb module Message-ID: <06F689CA-B781-4CEB-8F8A-B00FAC684DD3@obsigna.com> In-Reply-To: <20210116184833.1a3182a20a2b6c727b64bb59@bidouilliste.com> References: <47700631-2D94-4BA8-9707-9ADD70C99600@obsigna.com> <20210116184333.f91594f9c3505d2c588d9634@bidouilliste.com> <20210116184833.1a3182a20a2b6c727b64bb59@bidouilliste.com>
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> Am 16.01.2021 um 14:48 schrieb Emmanuel Vadot <manu@bidouilliste.com>: > > On Sat, 16 Jan 2021 18:43:33 +0100 > Emmanuel Vadot <manu@bidouilliste.com <mailto:manu@bidouilliste.com>> wrote: > >> On Sat, 16 Jan 2021 14:08:58 -0300 >> "Dr. Rolf Jansen" <freebsd-rj@obsigna.com> wrote: >> >>> I updated one of my BBB from an older 13-CURRENT (July 2020) to the latest 13-ALPHA1 snapshot from Jan, 14th ? GENERICSD-20210114-7ae27c2d6c4-255938. >>> >>> I had successfully employed an USB-WLAN dongle based on the RTL8188eu chipset. I only added the following into /boot/loader.conf: >>> >>> if_rtwn_usb_load="YES" >>> >>> By that all dependend modules were loaded automatically in a snap. With ALPHA1 this doesn?t work anymore. After hours of troubleshooting, I got it working by adding the following into /etc/rc.conf: >>> >>> kld_list="if_rtwn_usb" >>> >>> The "Loading kernel modules:" takes apprx. 4 seconds, however, then the USB-WLAN device is enumerated correctly and it is ready to use. This makes me think that this uncommon huge delay is the culprit. I checked this with some snapshot thats I had installed already. The issue seems to have been introduced together with the switch to GENERICSD. A GENERICSD 13-CURRENT from end of December showed this issue already, while a BBB-specific snapshot (from November 2020) that I had installed on another BBB works as before by loading the modules in /boot/loader.conf. >>> >>> I don't mind to load the modules by the way of the kld_list directive in /etc/rc.conf. However, the unusual long duration of loading the module and its dependencies might be an indication for a more fundamental issue. >>> >>> Please feel free to ask me for doing more tests. >>> >>> Best regards >>> >>> Rolf >> >> I can reproduce that on my netbooted BBB. >> The module is correctly loaded : >> >> Loading >> kernel... /boot/kernel/kernel text=0x1b4 text=0x68d638 text=0x1c84f0 >> data=0xb4070 data=0x0+0x258000 syms=[0x4+0xa5ab0+0x4+0x119fd4] Loading >> configured modules... /boot/kernel/if_rtwn_usb.ko text=0xb960 >> text=0x62c0 data=0x2cc+0x3b syms=[0x4+0x3570+0x4+0x293f] /boot/entropy >> size=0x1000 /etc/hostid >> size=0x25 Using DTB provided by EFI at >> 0x87f00000. Kernel entry at >> 0x96e00200... Kernel args: >> (null) >> ---<<BOOT>>--- >> >> But it isn't loaded anymore after booting : >> root@bbb:~ # kldstat >> Id Refs Address Size Name >> 1 1 0xc0000000 d23a8c kernel >> >> I don't think it has to do with the switch to GENERICSD, there is (at >> least shouldn't be) any difference between the old BBB image and the >> GENERICSD one. Yes, this might well be a coincidence. I do neither have the last BBB specific snapshot nor the first GENERICSD one for testing these against each other. > Just did a test on my OrangePi One (Allwinner H3 armv7 with 512MB of > RAM) and this is the same. > The problem seems to be module dependancy, loader only loads > if_rtnw_usb but doing a kldload also brings wlan.ko and rtwn.ko I can confirm this. And in addition loading the if_rtwn_usb.ko module and its dependcies manually also takes now significantly longer compared to a manual load on the BBB specific 13-CURRENT from November. Perhaps something has been changed in the dependency resolver.home | help
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