Questions[mmc](ubuntu)

I have Dell Venue 11 tablet with original keyboard/touchpad. After installation of LUbuntu 20.04, sometimes it resumed from suspend by any key or touchpad, sometimes by openning the lid, which cause resuming in a bag due to vibration, overheating and switching off by thermal protection system. At the following link, there is dmesg output after resuming by openning the lid. It appears that there are lot of errors of mmc1 sdhci during suspend:

[https://drive.google.com/drive/folders/1fPSDkfeanu1c9SoKmRVrlERT5QyoxbQy?usp=sharing][1]

The tablet is configured to resume from suspend only by its power button (PNP0C0C:00).

/etc/rc.local:

#!/bin/bash
for f in /sys/bus/*/devices/*/power/wakeup
do
    echo disabled > $f
done
sleep 1
echo enabled > /sys/bus/acpi/devices/PNP0C0C:00/power/wakeup
echo enabled > /sys/bus/platform/devices/INT33D6:00/power/wakeup
echo enabled > /sys/bus/platform/devices/PNP0C0C:00/power/wakeup
exit 0

The configuration is recorded successfully:

:~$ for f in /sys/bus/*/devices/*/power/wakeup; do echo $f; cat $f; done
/sys/bus/acpi/devices/PNP0C0A:00/power/wakeup
disabled
/sys/bus/acpi/devices/PNP0C0A:01/power/wakeup
disabled
/sys/bus/acpi/devices/PNP0C0C:00/power/wakeup
enabled
/sys/bus/acpi/devices/PNP0C0D:00/power/wakeup
disabled
/sys/bus/pci/devices/0000:00:14.0/power/wakeup
disabled
/sys/bus/pci/devices/0000:00:16.0/power/wakeup
disabled
/sys/bus/pci/devices/0000:00:1b.0/power/wakeup
disabled
/sys/bus/pci/devices/0000:00:1c.0/power/wakeup
disabled
/sys/bus/pci/devices/0000:00:1c.3/power/wakeup
disabled
/sys/bus/pci/devices/0000:00:1f.2/power/wakeup
disabled
/sys/bus/pci/devices/0000:01:00.0/power/wakeup
disabled
/sys/bus/pci/devices/0000:02:00.0/power/wakeup
disabled
/sys/bus/platform/devices/alarmtimer.0.auto/power/wakeup
disabled
/sys/bus/platform/devices/INT33D6:00/power/wakeup
enabled
/sys/bus/platform/devices/PNP0C0C:00/power/wakeup
enabled
/sys/bus/platform/devices/PNP0C0D:00/power/wakeup
disabled
/sys/bus/pnp/devices/00:02/power/wakeup
disabled
/sys/bus/serio/devices/serio0/power/wakeup
disabled
/sys/bus/usb/devices/1-2.1.1.2/power/wakeup
disabled
/sys/bus/usb/devices/1-2.1.1.3/power/wakeup
disabled
/sys/bus/usb/devices/1-2.1.1/power/wakeup
disabled
/sys/bus/usb/devices/1-2.1/power/wakeup
disabled
/sys/bus/usb/devices/1-2/power/wakeup
disabled
/sys/bus/usb/devices/1-4/power/wakeup
disabled
/sys/bus/usb/devices/2-2.1.1.4/power/wakeup
disabled
/sys/bus/usb/devices/2-2.1.1/power/wakeup
disabled
/sys/bus/usb/devices/2-2.1/power/wakeup
disabled
/sys/bus/usb/devices/2-2/power/wakeup
disabled
/sys/bus/usb/devices/usb1/power/wakeup
disabled
/sys/bus/usb/devices/usb2/power/wakeup
disabled

I tried to disable INT33D6:00. After that, the system cannot be waked up.

How to configure the system to resume only by the power button?

I've got Ubuntu 18.04 LTS on a Dell E7250. The o2-micro-SD-card-reader doesn't work after installation so I have to do

sudo rmmod sdhci_pci
sudo rmmod sdhci
sudo modprobe sdhci debug_quirks2="0x80000000"
sudo modprobe sdhci_pci

at startup.

The blog post Workaround for broken O2 Micro SD card reader support since Linux kernel version 4.1.8 says that I have to edit a *.conf file to have it happen automatically at startup, but it doesn't say which file and how exactly I have to edit it.

What file do I have to edit?

My SD-cards won't mount automatically anymore. In the past it did, also on Ubuntu 18.04, but now when returning from my summer holiday and upgraded the system it won't anymore.

Anyone knows a trick? Now i need to open «Disks» (gnome-disks?) and then manually mount each partition on the card, or with sudo mount /dev/mmcblk0pX /mount/destination. It's more convenient when it's mounted automatically.

I have a Dell XPS 15 9560 running Ubuntu 18.04 and I can't seem to get the memory card working. Everything I've tried, looking at other threads on here and elsewhere, but to no avail. Below is the details:

 $ lspci -vvnn -s 03:00.0
03:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS525A PCI Express Card Reader [10ec:525a] (rev 01)
    Subsystem: Dell RTS525A PCI Express Card Reader [1028:07be]
    Physical Slot: 1
    Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
    Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
    Latency: 0
    Interrupt: pin A routed to IRQ 135
    Region 1: Memory at ed400000 (32-bit, non-prefetchable) [size=4K]
    Capabilities: <access denied>
    Kernel driver in use: rtsx_pci
    Kernel modules: rtsx_pci

 $ lsmod | grep rtsx                  
rtsx_usb               20480  0
rtsx_pci_ms            20480  0
memstick               16384  1 rtsx_pci_ms
rtsx_pci_sdmmc         24576  0
rtsx_pci               57344  2 rtsx_pci_sdmmc,rtsx_pci_ms

 $ ls -la /dev | grep mmc
 $ sudo rmmod rtsx_pci_sdmmc rtsx_pci_ms rtsx_pci
 $ sudo modprobe rtsx_pci
 $ ls -la /dev | grep mmc

Based on the above, it's quite clear the module is loaded and ready, but the memory card is not seen by the kernel.

Other people seem to have success by inserting the memory card before boot, but that doesn't seem to work for me.

From memory this worked fine in 17.10.

Any help or pointers would be much appreciated.