Need to downgrade (or upgrade?) Logitech K375s firmware (or get access to newer firmware) #28
Description
I have a Logitech K375s keyboard that I'm using on Ubuntu 18.04 systems. The following are screenshots from Solaar on my system:
The current MPK 03.04.B0014 firmware for my keyboard seems to have a bug.
The keyboard goes into a suspend or sleep mode after its untouched for a short while, which I am sure preserves the battery life. When it is touched again, it "wakes up".
On my Logitech K375s with the MPK 03.04.B0014 firmware, there's a string of gibberish that flies out of the keyboard every time it "wakes up" from this light, and otherwise perfectly functional, sleep. I've tried swapping the keyboard mode -- to iOS mode (by pressing Fn-I for about seven seconds), to MacOS mode (by pressing Fn-O for about seven seconds), and to Windows/Android mode (by pressing Fn-P for about seven seconds) -- and none of those modes is without this issue. In fact, every time a switch modes, a new set of garbage is randomly spewed by the keyboard (albeit, each mode seems to use a slightly different set of garbage characters. I suppose there is a small chance my keyboard was physically damaged in some way, but it's working perfectly in all other ways. And the keyboard has been doing this since I purchased it, IIRC.
I like this keyboard in every other way. I believe it's too late to return it. I really don't WANT to replace it.
Can I either downgrade to the MPK 03.02.B0009 firmware available on LVFS already -or- can newer firmware that fixes this problem be uploaded to LVFS? I've tried with Ubuntu 18.04 systems, running this version of fwupd:
user@xubuntu:~$ sudo fwupdmgr --version
client version: 1.2.10
compile-time dependency versions
gusb: 0.2.11
efivar: 34
daemon version: 1.2.10
user@xubuntu:~$
When I run fwupdmgr get-devices, the Unifying Receiver shows up, but not the keyboard device.
user@xubuntu:~$ sudo fwupdmgr --allow-older get-devices
Unifying Receiver
DeviceId: 71d6fa6e8873db78a7d81ac01104b67d32c44299
Guid: cc4cbfa9-bf9d-540b-b92b-172ce31013c1
Guid: 279ed287-3607-549e-bacc-f873bb9838c4 <- HIDRAW\VEN_046D&DEV_C52B
Summary: A miniaturised USB wireless receiver
Plugin: unifying
Flags: updatable|supported|registered
Vendor: Logitech
VendorId: USB:0x046D
Version: RQR24.10_B0036
VersionBootloader: BOT03.01_B0008
VersionFormat: plain
Icon: preferences-desktop-keyboard
InstallDuration: 7
Created: 2020-04-30
LVM PV iHUzDB-gMpb-YuG7-b2r6-yzqL-6SSV-nqDcCi on /dev/sda
DeviceId: f219ac034743df43be49a235e41f128dd47d855f
Guid: 4d642611-e9f4-50fe-9034-8aee4b6707f1 <- IDE\LVM_PV_iHUzDB-gMpb-YuG7-b2r6-yzqL-6SSV-nqDcCi_on_/dev/sdaCC26
Guid: 8fbdc88a-2f9b-5552-93f7-c0b5cbc67e37 <- IDE\0LVM_PV_iHUzDB-gMpb-YuG7-b2r6-yzqL-6SSV-nqDcCi_on_/dev/sda
Guid: 015ff5ef-99ee-59f5-bb47-51d7d9b3d1cf <- LVM PV iHUzDB-gMpb-YuG7-b2r6-yzqL-6SSV-nqDcCi on /dev/sda
Serial: Z4Z7EK93
Summary: ATA Drive
Plugin: ata
Flags: internal|updatable|require-ac|registered|needs-reboot
Version: CC26
VersionFormat: plain
Icon: drive-harddisk
Created: 2020-04-30
LVM PV 1s1Sxb-Rtn3-eRAq-aahI-WnPI-mdTn-pexbuF on /dev/sdb
DeviceId: 7466579651466dd8b56d7a19479bed768440026d
Guid: a5f7bbab-3cd9-500f-a754-bd85b4ade5ad <- IDE\LVM_PV_1s1Sxb-Rtn3-eRAq-aahI-WnPI-mdTn-pexbuF_on_/dev/sdb80.00A80
Guid: 8b83217d-ec29-5842-afaf-5e60cf735edc <- IDE\0LVM_PV_1s1Sxb-Rtn3-eRAq-aahI-WnPI-mdTn-pexbuF_on_/dev/sdb
Guid: c6e59e9a-995a-5092-a9fd-ded3f5bb4627 <- LVM PV 1s1Sxb-Rtn3-eRAq-aahI-WnPI-mdTn-pexbuF on /dev/sdb
Serial: WD-WCC4M7VUSXYA
Summary: ATA Drive
Plugin: ata
Flags: internal|updatable|require-ac|registered|needs-reboot
Version: 80.00A80
VersionFormat: plain
Icon: drive-harddisk
Created: 2020-04-30
Samsung SSD 840 EVO 120GB
DeviceId: 70079f60e6e7fb777f0cad46adc124f60c371b7b
Guid: cfee1a72-b48e-5d5f-8443-a53d6acd0510 <- IDE\Samsung_SSD_840_EVO_120GB_______________EXT0BB6Q
Guid: 7ec0cdc1-a34c-5515-8672-3c1051b8fbec <- IDE\0Samsung_SSD_840_EVO_120GB_______________
Guid: 87e7963d-ec79-5bee-a9ff-5c66e487aa92 <- Samsung SSD 840 EVO 120GB
Serial: S1D5NSAF716308E
Summary: ATA Drive
Plugin: ata
Flags: internal|updatable|require-ac|registered|needs-reboot
Version: EXT0BB6Q
VersionFormat: plain
Icon: drive-harddisk
Created: 2020-04-30
user@xubuntu:~$
How would I force the downgrade? Or will there be an upgrade? I'm REALLY hoping there's a solution. You have no idea how badly this interferes with writing documents, gaming... virtually everything worthwhile I do on this system. And it's otherwise SUCH a great device...
This seems related to, but unique from, long-expired fwupd/fwupd issue #449; I also submitted fwupd/fwupd issue #2044 in relation to this. Please let me know what can be done! Thanks.