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-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1949258 Title: First installation of Lubuntu damaged PCIe slot assignment permanently Status in linux package in Ubuntu: Invalid Bug description: PCI Express x16 Bus record disappeared in the HWInfo64 bus section after installation of Lubuntu as dual boot Notebook model is HP Pavilion - 17-ab403ng The Hwinfo64 report delivers the following results for my HP Pavilion: in the motherboard section Motherboard Slots: 2xPCI Express x1, 1xPCI Express x8, 1xPCI Express x16 in the bus section PCI Express x8 Bus #1 [J6B2] NVIDIA GeForce GTX 1050 Ti [HP] [General Information] Device Name: NVIDIA GeForce GTX 1050 Ti [HP] Original Device Name: NVIDIA GeForce GTX 1050 Ti (GP107M) Device Class: VGA Compatible Adapter Revision ID: A1 PCI Address (Bus: Device: Function) Number: 1:0:0 PCI Latency Timer: 0 Hardware ID: PCI\VEN_10DE&DEV_1C8C&SUBSYS_84ED103C&REV_A1 [PCI Express] Version: 3.0 Maximum Link Width: 16x Current Link Width: 8x Maximum Link Speed: 8.0 GT/s Current Link Speed: 2.5 GT/s Device/Port Type: PCI Express Endpoint Slot Implemented: No Emergency Power Reduction: Not Supported Active State Power Management (ASPM) Support: L0s and L1 Active State Power Management (ASPM) Status: L0s and L1 Entry L0s Exit Latency: 256 - 512 ns L1 Exit Latency: 2 - 4 us Maximum Payload Size Supported: 256 bytes Maximum Payload Size: 256 bytes Resizable BAR Support: Not Supported [System Resources] Interrupt Line: N/A Interrupt Pin: INTA# Memory Base Address 0 63000000 Memory Base Address 1 50000000 Memory Base Address 3 60000000 I/O Base Address 5 0 [Features] Bus Mastering: Enabled Running At 66 MHz: Not Capable Fast Back-to-Back Transactions: Not Capable [Driver Information] Driver Manufacturer: NVIDIA Driver Description: NVIDIA GeForce GTX 1050 Ti Driver Provider: NVIDIA Driver Version: 27.21.14.6627 (GeForce 466.27) Driver Date: 23-Apr-2021 DCH/UWD Driver: Capable DeviceInstanceId PCI\VEN_10DE&DEV_1C8C&SUBSYS_84ED103C&REV_A1\4&33ECA368&0&0008 Location Paths PCIROOT(0)#PCI(0100)#PCI(0000) The PCI Express bus enumeration ends with #3 and the NVMe PCIe SSD controller is not listed. However, a Hwinfo64 report of a comparable board can be found on the Internet. There, an NVMe PCIe SSD controller is listed in the Bus section (see below) under PCI Express x4. PCI Express x4 Bus #4 Samsung NVMe PCIe SSD Controller [General Information] Device Name: Samsung NVMe PCIe SSD Controller Original Device Name: Samsung Electronics NVMe PCIe SSD Controller Device Class: NVMe Controller Revision ID: 0 PCI Address (Bus: Device: Function) Number: 4:0:0 PCI Latency Timer: 0 Hardware ID: PCI\VEN_144D&DEV_A808&SUBSYS_A801144D&REV_00 [PCI Express] Version: 3.0 Maximum Link Width: 4x Current Link Width: 4x Maximum Link Speed: 8.0 GT/s Current Link Speed: 8.0 GT/s Device/Port Type: PCI Express Endpoint Slot Implemented: No Emergency Power Reduction: Not Supported Active State Power Management (ASPM) Support: L1 Active State Power Management (ASPM) Status: L1 Entry L0s Exit Latency: >4 us L1 Exit Latency: 32 - 64 us Maximum Payload Size Supported: 256 bytes Maximum Payload Size: 256 bytes [System Resources] Interrupt Line: N/A Interrupt Pin: INTA# Memory Base Address 0 AD200000 [Features] Bus Mastering: Enabled Running At 66 MHz: Not Capable Fast Back-to-Back Transactions: Not Capable [Driver Information] Driver Manufacturer: Standard NVM Express Controller Driver Description: Standard NVM Express Controller Driver Provider: Microsoft Driver Version: 10.0.19041.488 Driver Date: 21-Jun-2006 DeviceInstanceId PCI\VEN_144D&DEV_A808&SUBSYS_A801144D&REV_00\4&CDF9F35&0&00DC Location Paths PCIROOT(0)#PCI(1B04)#PCI(0000) My HP Pavilion, on the other hand, does not have a PCI Express x4 slot, but it does have a PCI Express x8 slot. According to the Hwinfo64 report of my HP Pavilion notebook, the graphics card NVIDIA GeForce GTX 1050 Ti (GP107M) sits in the PCI Express x8 slot. Specified for this graphics card is: x4. Maximum Link Width: 16x In the Hwinfo64 report of the board used for comparison, the graphics card is attached to the PCI Express x16 bus #1 (see below) as listed in the Bus section, i.e. in the correct place (16 lanes). PCI Express x16 Bus #1 NVIDIA GeForce GTX 1060 [GIGABYTE] [General Information] Device Name: NVIDIA GeForce GTX 1060 [GIGABYTE] Original Device Name: NVIDIA GeForce GTX 1060 (GP106M/N17P-G1) Device Class: VGA Compatible Adapter Revision ID: A1 PCI Address (Bus:Device:Function) Number: 1:0:0 PCI Latency Timer: 0 Hardware ID: PCI\VEN_10DE&DEV_1C20&SUBSYS_16521458&REV_A1 Version: 3.0 Maximum Link Width: 16x Current Link Width: 16x Maximum Link Speed: 8.0 GT/s Current Link Speed: 2.5 GT/s Device/Port Type: PCI Express Endpoint Slot Implemented: No Emergency Power Reduction: Not Supported Active State Power Management (ASPM) Support: L0s and L1 Active State Power Management (ASPM) Status: L0s and L1 Entry L0s Exit Latency: 256 - 512 ns L1 Exit Latency: 8 - 16 us Maximum Payload Size Supported: 256 bytes Maximum Payload Size: 256 bytes [System Resources] Interrupt Line: N/A Interrupt Pin: INTA# Memory Base Address 0 AC000000 Memory Base Address 1 80000000 Memory Base Address 3 90000000 I/O Base Address 5 0 [Features] Bus Mastering: Enabled Running At 66 MHz: Not Capable Fast Back-to-Back Transactions: Not Capable [Driver Information] Driver Manufacturer: NVIDIA Driver Description: NVIDIA GeForce GTX 1060 Driver Provider: NVIDIA Driver Version: 27.21.14.5167 (GeForce 451.67) Driver Date: 05-Jul-2020 DCH/UWD Driver: Capable DeviceInstanceId PCI\VEN_10DE&DEV_1C20&SUBSYS_16521458&REV_A1\4&DAED9F9&0&0008 Location Paths PCIROOT(0)#PCI(0100)#PCI(0000) In the System Buses section of the SiSoft Sandra report of my Pavilion notebook (see below), there is a warning 1204 at the end. Possibly, the reference there to the higher maximum supported speed is due to the lower number of lanes (8 in the bus instead of 16). SiSoftware Sandra Systembusse Systembusse Schnittstellenversion: 2.30 PCI Busse: 4 PCIe Busse: 3 Systembus Typ: PCI Gerätenummer: 0 Multiplikator: 1x Systembus Typ: PCIe 3.0 x8 2.5Gbps Gerätenummer: 1 Multiplikator: 3x Bridge: Intel Core6 (Skylake) PCIe Controller (x16) Systembus Typ: PCIe 3.0 x1 2.5Gbps Gerätenummer: 2 Multiplikator: 3x Bridge: Intel ICH300 (Cannon Point) PCI Express Root Port #14 Gerät mit Anschluss verbunden: HP RTL8168/8111 PCI-E Gigabit Ethernet NIC Systembus Typ: PCIe 3.0 x1 2.5Gbps Gerätenummer: 3 Multiplikator: 3x Bridge: Intel ICH300 (Cannon Point) PCI Express Root Port #16 Gerät mit Anschluss verbunden: HP RTS522A PCI Express Card Reader Leistungstipps Warning 1204: Speed is below the maximum supported speed. The device may be in power-saving mode. Tip 3: Press Enter or double-click on a tip to find out more information. If there is a possibility to disconnect the NVIDIA graphics card electrically, I could unscrew the notebook, do the disconnection and boot the Windows partition (In the default setting, another graphics card is active, after all). The hardware initialization should then assign the NVMe SSD to the correct port, since the NVIDIA graphics card is no longer present. What could be the reason that the PCI Express x16 Bus is not listed by HWINFO in the BUS section of the HP notebook and why the NVIDIA Graphics card is assigned to the PCI Express x8 Bus of the HP notebook instead of the PCI Express x16 Bus? Thank you very much. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1949258/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
