Macbook 9,1 Bluetooth on 19.10

Having Issues with bluetooth on 19.10, the good news is everything else seems to work fine with the one exception. here is the error for the firmware load.

~$ lsusb; dmesg | egrep -i ‘blue|firm’

Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

[ 0.124400] Spectre V2 : Enabling Restricted Speculation for firmware calls

[ 0.155408] ACPI: [Firmware Bug]: BIOS _OSI(Linux) query ignored

[ 3.369429] Bluetooth: Core ver 2.22

[ 3.369453] Bluetooth: HCI device and connection manager initialized

[ 3.369457] Bluetooth: HCI socket layer initialized

[ 3.369459] Bluetooth: L2CAP socket layer initialized

[ 3.369463] Bluetooth: SCO socket layer initialized

[ 3.434399] Bluetooth: HCI UART driver ver 2.3

[ 3.434401] Bluetooth: HCI UART protocol H4 registered

[ 3.434402] Bluetooth: HCI UART protocol BCSP registered

[ 3.434416] Bluetooth: HCI UART protocol LL registered

[ 3.434417] Bluetooth: HCI UART protocol ATH3K registered

[ 3.434428] Bluetooth: HCI UART protocol Three-wire (H5) registered

[ 3.434460] Bluetooth: HCI UART protocol Intel registered

[ 3.434506] Bluetooth: HCI UART protocol Broadcom registered

[ 3.434515] Bluetooth: HCI UART protocol QCA registered

[ 3.434516] Bluetooth: HCI UART protocol AG6XX registered

[ 3.434525] Bluetooth: HCI UART protocol Marvell registered

[ 3.634082] [drm] Finished loading DMC firmware i915/skl_dmc_ver1_27.bin (v1.27)

[ 3.758053] brcmfmac 0000:02:00.0: Direct firmware load for brcm/brcmfmac4350c2-pcie.Apple Inc.-MacBook9,1.txt failed with error -2

[ 3.758079] brcmfmac 0000:02:00.0: Direct firmware load for brcm/brcmfmac4350c2-pcie.txt failed with error -2

[ 4.056082] brcmfmac: brcmf_c_preinit_dcmds: Firmware: BCM4350/5 wl0: Nov 26 2015 03:48:57 version 7.35.180.133 (r602372) FWID 01-c45b39d6

[ 5.558864] Bluetooth: hci0: command 0xfc18 tx timeout

[ 7.073793] Bluetooth: BNEP (Ethernet Emulation) ver 1.3

[ 7.073795] Bluetooth: BNEP filters: protocol multicast

[ 7.073799] Bluetooth: BNEP socket layer initialized

[ 13.622672] Bluetooth: hci0: BCM: failed to write update baudrate (-110)

[ 13.622676] Bluetooth: hci0: Failed to set baudrate

[ 15.638895] Bluetooth: hci0: command 0x0c03 tx timeout

[ 23.862868] Bluetooth: hci0: BCM: Reset failed (-110)

MacBook pro 2011 will not boot 18.04

I am trying to install 18.04 on my old MBP. The USB boot works fine, but when I rebooted after the hd install, it gets stuck during the initialization. I tried editing grub to disable the Radeon graphics, but no change. I am unable to interrupt the grub sequence by hitting “e” to disable the Radeon graphics card. Any suggestions for how to get this install to work? I am not dual-booting, as I have totally wiped the hd. Thanks for any help.

EFI partition Macbook

I know this question have probebly come up earlier but i couldnt find any article thats excactly my case.

Therefore i ask you guys.

I just installed the newest ubuntu on my mac, the issue is i do not have any EFI partition and i wonder if i can create that afterwards of the installation?

Can you guys please help because i do not dare to turn off my pc right now, have tried for a week with different distros.

When i boot it will come a white screen for 30 seconds before i get to the grub menu.

Its really annoying since i just putted in a new ssd in this old macbook.

Please guys help me with a nice solution and guide here!

Thanks! 🙂

Involved Qs re MacBook 2011, Linux, OS X Sierra, and partitions

Short version: 1T Samsung SSD drive, partitioned to dual boot w/ OSX Sierra (800 gigs) and whatever Linux flavor I feel like playing with (Mint or Ubuntu mainly). There are TWO “Recovery” partitions. I want to remove the one I am virtually certain is not being used (why is for my long version if someone wants such a story). I cannot remove the extra Recovery partition in OS X, at least using the graphical version of diskutil (perhaps on a command line if I knew how). I think I could remove it in Linux using gparted or some such, except it is a partition occurring before the main OS X Sierra partition.

In fact, here’s the basic partitioning: 1. Mint (at the moment) Linux 2. A second Recovery partition (I’ve actually reformatted this to exfat, just to prove to myself it isn’t the real Recovery partition.) 3. MacOS Sierra 4. The real Recovery Partition

My question is this: Can I safely delete that 2nd (the exfat) partition without causing OS X to go into kernel panic / a dinosaur ate my homework mode?

I have a long explanation if anyone wants it, but think I’ll go with the short one for now.

New user has appeared on my Macbook Pro

Today I noticed the addition of a new user “Linchengzhang” on my MacBook pro. Apparently the user was added 25th April 2019 (according to the folder creation) and it appears to have an identical structure as those described in this postand this post. I don’t know how they managed to structure their files so they could grab all the directory in a screenshot, but if anyone knows and needs to to see it, let me know.

Interestingly, they do not show up in “users and groups”, so I don’t think they’re really classed as a user, but they are placed in the “Users” subdirectory.

As it’s mentioned in the first post I’ve linked I do have to say that this mac has been sent away for repairs to Apple on 8th April 2019.

I do download a lot of software from a lot of places as I’m a bioinformatics student working on many different projects and so I can’t rule out that I’ve downloaded something suspicious. I’m curious as to the fact I haven’t noticed it until now, I spend quite a bit of time moving between directories and it’s not unusual for me to accidently wind up in the Users directory when I go one or two too far back.

It seems quite suspicious to me (as a non-information security professional) and I was wondering a) what you all think and b) what do I do about it?

which macbook for Matlab/programming/computing science

I would like to know which MacBook Pro (2019) is more suited for MatLab (finite element methods for PDEs stuff), programming (in C, related to PDEs stuff) which I can use for 5++ years.

I would like a solid machine, but obviously I do not wish to spend money on specifics I will never use. Note that I won’t use the mac for graphic/editing/gaming stuff, but rather for scientific/computing/programming tasks.

MacBook 2.1 late 2006 issues with installation of Ubuntu 18.04

I rescued an old MacBook 2.1 late 2006 13″ from my job. After a deep search of couple days I found this video https://www.youtube.com/watch?v=NIsF96jx87A&t=539s who help me to install ubuntu 16.02 on my old macbook laptop. Now, I’ve been trying to install ubuntu 18.04, unfortunately after the installation ( it looks like everything went well during this process) after first reboot the laptop cannot start the OS, first started with a black screen and when I forced pushing the turn on botton, I can see the system loading the OS again, but the screen goes to a pink-violet screen and the OS never comes up.

I really want to make an use of this old laptop and see if i can upgrade the Ubuntu version,I will appreciate if someone can help me.

Thank you!

Ubuntu boot option not showing on my macbook air unless an unrelated USB is plugged in

I tried to install Ubuntu on a 256g flash drive but it didn’t want to cooperate, so I ended up partitioning out 75g of my mac SSD for Ubuntu. I installed it fine, except when I hold option at boot to select it, I discovered it doesn’t show an option to boot into Ubuntu unless the prior flash drive (which I formatted after failing to install to it) is plugged in for whatever reason.

I saw threads saying that ubuntu can be fiddly in terms of showing up, and I tried installing rEFInd and encountered other errors.

Are there other ways to make Ubuntu visible in the boot menu? And why does a formatted flash drive make it appear?

Try Ubuntu Without Installing Macbook 2011 8.2

I am in the middle of trying to resolve the dreaded Radeon issue with the 2011 Macbook pro. I have created a bootable USB stick with everything I should need to eventually disable the Radeon GPU ahead of removing a sensor to complete the job. I am using the ubuntu-16.04.3-desktop-amd64.iso

There a couple of modifications to the created stick, with a new grub.cfg file to replace the existing one and the addition of a Radeondisable.sh file in the root of the stick to disable the GPU

When I boot into the stick, I select Try Ubuntu Without Installing, but it sits at a black screen and does nothing. Mine doesn’t look exactly like images I have seen, with a * appearing before the words Try Ubuntu……

Any help gladly accepted

By the way, I have already seen to type e after selecting Try Ubuntu…… but nothing happens when I do that; no possibly to edit at that point