Fixing Broadcom Corporation BCM57765/57785 SDXC/MMC Card Reader

bcm57765or57785fix

Follow the WORKAROUND:
  1. Add a comand to /etc/rc.local, add the following line above "exit 0": 
        setpci -s 00:1c.2 0x50.B=0x41
  2. Add the same comand to /etc/apm/resume.d/21aspm (which does not exist yet):
        setpci -s 00:1c.2 0x50.B=0x41
  3. Add the following to /etc/modprobe.d/sdhci.conf:
          options sdhci debug_quirks2=4
  4. Re-generate initrd:
         sudo update-initramfs -u -k all
  5. Reboot or reload sdhci module:
         sudo rmmod sdhci-pci sdhci
         sudo modprobe sdhci
         sudo modprobe sdhci-pci

If SD card still not detected after reboot, type this in command line:
     $ sudo setpci -s 00:1c.2 0x50.B=0x41
Tested on Acer V5-171

Reference: 
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1307674
https://wiki.allensmith.net/kb:linux:14lts-bcm57765-bmc57785

Thank You so much!
Worked on Apire V3-571 running Xubuntu 18.04.

Plus for first step of this solution, /etc/rc.local don't existis on 18.04, so first create sudo touch /etc/rc.local and make it executable sudo chmod +x /etc/rc.local

After just edit /etc/rc.local and add the content of first step like bellow:

#!/bin/sh -e
#
# rc.local
#
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will "exit 0" on success or any other
# value on error.
#
# In order to enable or disable this script just change the execution
# bits.
#
# By default this script does nothing.

setpci -s 00:1c.2 0x50.B=0x41

exit 0

[]'s

Hello, I confirm it makes the SD reader visible on my Acer V5 171 (kernel 5.4.2) ...
Alas, read speed is very slow on my high capacity SDXC card (256GB). I get about 1 MB/s.
The card is 256GB, UHS-1, rated 100 MB/s, and works flawlessly on another PC.

Hi,
the fix doesn't work 100% on my ACER AO 756 running Leap 15.1:

• mount: ok
• read: ok
• write: only few and small files at a time. If I increase the size and/or the nr. of files to be copied on the SD card, the process starts but after a while it hangs.
  Any hint?

Thank you very much!
But in my case me needed in the 3rd paragraph change command by:
options sdhci debug_quirks=0x40 debug_quirks2=0x4

Thank You so much!
Worked on Apire V3-571 running Xubuntu 18.04.

Plus for first step of this solution, /etc/rc.local don't existis on 18.04, so first create sudo touch /etc/rc.local and make it executable sudo chmod +x /etc/rc.local

After just edit /etc/rc.local and add the content of first step like bellow:

#!/bin/sh -e
#
# rc.local
#
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will "exit 0" on success or any other
# value on error.
#
# In order to enable or disable this script just change the execution
# bits.
#
# By default this script does nothing.

setpci -s 00:1c.2 0x50.B=0x41

exit 0

[]'s

I was having the same problem, there was no such file as "rc.local". As soon as I created the file, my SDHC card showed up. It was quite frustrating. But the thing with linux is that we get to learn new things.

Thank you. Worked on iMac14,2 after trying many other solutions to make SD card / reader recognisable....

Kernel: 5.4.0-47-generic x86_64 bits: 64 compiler: gcc v: 7.5.0
Desktop: Cinnamon 4.4.8 wm: muffin dm: LightDM Distro: Linux Mint 19.3 Tricia
base: Ubuntu 18.04 bionic

Thank you. Worked perfectly on mac mini 5,1 mid-2011. Also thanks @viniciusdaniel https://gist.github.com/samgooi4189/2e6e18fd1d562acaf39246e5e386d7cb#gistcomment-3066660

Kernel 5.4.0-52-generic x86_64
Base: Ubuntu 20.04.1 LTS

lshw

    description: Lunch Box Computer
    product: Macmini5,1 (System SKU#)
    vendor: Apple Inc.
    version: 1.0

感谢，我使用　options sdhci debug_quirks=0x40 debug_quirks2=0x4　解决了问题，就是写的速度比慢点,好歹能用。
我的环境：
`
Distributor ID: Ubuntu
Description: Ubuntu 20.04.4 LTS
Release: 20.04
Codename: focal

macbookpro 13 retina late 2012　+ Ubuntu20.0.4
`

lsm@lsm-MacBookPro:~$ lspci|grep SD
02:00.1 SD Host controller: Broadcom Inc. and subsidiaries BCM57765/57785 SDXC/MMC Card Reader (rev 21)
获取到SD卡槽的编号为02:00.1　，从上面的命令查询的结果的开头编号部分，如下的命令里会使用到这个编号02:00.1。
`Follow the WORKAROUND:

1. Add a comand to /etc/rc.local, add the following line above "exit 0": （这步我省略了）
   setpci -s 02:00.1 0x50.B=0x41
2. Add the same comand to /etc/apm/resume.d/21aspm (which does not exist yet):
   setpci -s 02:00.1 0x50.B=0x41
3. Add the following to /etc/modprobe.d/sdhci.conf:
   options sdhci debug_quirks=0x40 debug_quirks2=0x4
4. Re-generate initrd:
   sudo update-initramfs -u -k all
5. Reboot or reload sdhci module:
   sudo rmmod sdhci-pci sdhci
   sudo modprobe sdhci
   sudo modprobe sdhci-pci

`

Obrigado! Resolveu no meu Mac Book Pro 2011/2012 late

for setpci to work, secure boot must be disabled at bios level.

Guy you have a paid beer if you come to Milan Italy. It worked also on a Acer AO756 , you are great!!!

thanks! Got a 2011 Macbook pro (8,1) working because of this.