Apologies for the previous email, which was not formatted as plaintext. I have fixed this for this email. Dear Maintainers, Tested on several kernels, including the latest master at time of testing ( 6.15.0-0.rc5.250509g9c69f8884904.47.fc43.x86_64 ), JMB368-based IDE to PCIe adapters are capped at extremely slow speeds, regardless of whether the device attached is capable of much higher ones. This issue exists OOTB on Windows as well, but is fixed via installing the proper drivers, see http://forum.redump.org/topic/59287/fix-for-pex2ide-jmicron-36x-based-pci-adapters-on-windows-1011/ for more information. I have tested Windows on the same machine and confirmed that the issue is fixed once I have installed the proper drivers. Please let me know what additional info is necessary. This is my first time submitting a kernel bug, and I'm not sure what extra information might be needed. Cheers, Bestest Specific adapter purchased: https://www.amazon.com/dp/B000YAX13Y Quote of the above forum post, if necessary: A handful of dumpers have been having issues specifically with the StarTech board you can grab on Amazon for a bit over $20 - this has a JMB368 controller, but it "should" apply to any given PEX2IDE adapter. Specifically - the adapter seems to be very compatible with any given IDE optical drive you throw at it, but the read/write speeds are "very" poor, similar to PIO4 mode speeds or as if the drive is perpetually stuck in a 2x CD-ROM read speed average regardless of parameters used. Additionally, I had minor stability issues on my setup using a 12th gen Intel CPU/motherboard that also seem to be caused by how this card operates in Windows by default when dumping discs - this also seems to fix those issues if you've had any issues on that end. The "fix" is just manually replacing the generic "Standard Dual Channel IDE Controller" you'll have appear in device manager with an official driver from 2009 (1.17.49.4) - extract the files from the linked cab archive (direct from Microsoft Update Catalog, it's signed/legit etc.) to any given dir and manually update the driver by pathing to the folder with the cat/inf/sys files. https://www.catalog.update.microsoft.com/Search.aspx?q=jmb36x The entire set of drivers can be found here - since MS doesn't denote what version or x86/x64 variation as is, here are the relevant x64 and x86 drivers: x64: www.catalog.update.microsoft.com/ScopedViewInline.aspx?updateid=65fceaa7-e6b6-4aac-8846-37b4ca469c5d x86: www.catalog.update.microsoft.com/ScopedViewInline.aspx?updateid=9ca80e2c-4391-4e75-8353-af41ef10a5c5 The newer drivers seemingly either fail to install (Device already has best available drivers installed) or simply fails outright. This specific revision for whatever reason replaces the generic one without issue and works as expected. If you want to poke at the later versions, be my guest! Output of uname -r on latest kernel: $ uname -r 6.15.0-0.rc5.250509g9c69f8884904.47.fc43.x86_64 Output from lspci -v: 03:00.0 IDE interface: JMicron Technology Corp. JMB368 IDE controller (prog-if 85 [PCI native mode-only controller, supports bus mastering]) Subsystem: JMicron Technology Corp. JMB368 IDE controller Physical Slot: 1 Flags: bus master, fast devsel, latency 0, IRQ 28 I/O ports at d010 [size=8] I/O ports at d020 [size=4] I/O ports at d018 [size=8] I/O ports at d024 [size=4] I/O ports at d000 [size=16] Expansion ROM at ee100000 [virtual] [disabled] [size=64K] Capabilities: [68] Power Management version 2 Capabilities: [50] Express Legacy Endpoint, IntMsgNum 1 Capabilities: [70] MSI: Enable- Count=1/1 Maskable- 64bit- Kernel driver in use: pata_jmicron Kernel modules: pata_jmicron, pata_acpi, ata_generic Relevant output from dmesg: [ 3.155555] scsi host6: pata_jmicron [ 3.159374] scsi host7: pata_jmicron [ 3.159457] ata7: PATA max UDMA/100 cmd 0xd010 ctl 0xd020 bmdma 0xd000 irq 28 lpm-pol 0 [ 3.159461] ata8: PATA max UDMA/100 cmd 0xd018 ctl 0xd024 bmdma 0xd008 irq 28 lpm-pol 0 [ 3.204963] FDC 0 is a post-1991 82077 [ 3.229154] usb-storage 1-3:1.0: USB Mass Storage device detected [ 3.230081] scsi host8: usb-storage 1-3:1.0 [ 3.230253] usbcore: registered new interface driver usb-storage [ 3.234360] tg3 0000:01:00.0 eth0: Tigon3 [partno(BCM95754) rev 5784100] (PCI Express) MAC address 2c:27:d7:2d:99:f4 [ 3.234367] tg3 0000:01:00.0 eth0: attached PHY is 5784 (10/100/1000Base-T Ethernet) (WireSpeed[1], EEE[0]) [ 3.234370] tg3 0000:01:00.0 eth0: RXcsums[1] LinkChgREG[0] MIirq[0] ASF[0] TSOcap[1] [ 3.234373] tg3 0000:01:00.0 eth0: dma_rwctrl[76180000] dma_mask[64-bit] [ 3.315037] ata7.00: ATAPI: PLEXTOR DVDR PX-716A, 1.11, max UDMA/66 [ 3.319542] scsi 6:0:0:0: CD-ROM PLEXTOR DVDR PX-716A 1.11 PQ: 0 ANSI: 5 [ 3.362459] sr 6:0:0:0: [sr1] scsi3-mmc drive: 40x/40x writer cd/rw xa/form2 cdda tray [ 3.389254] sr 6:0:0:0: Attached scsi CD-ROM sr1 [ 3.389402] sr 6:0:0:0: Attached scsi generic sg2 type 5
