Package: src:linux Version: 5.10.136-1 Severity: normal X-Debbugs-Cc: krylov.r...@gmail.com
Dear Maintainer, On my GPD Pocket 1, the backlight worked well with the 4.19 kernel from stretch-backports. After the upgrade to Bullseye, I cannot adjust the backlight intensity either using the keyboard shortcuts or by writing into /sys/class/backlight/acpi_video0/brightness. In the latter case, the write succeeds but doesn't have an effect on my display. I can also see this problem with the 5.18 kernel from bullseye-backports. The following lines from the kernel log seem to be relevant, but I'm afraid I'm completely at a loss regarding what can be done to fix the problem: [ +0,009771] i915 0000:00:02.0: [drm] *ERROR* Failed to get the SoC PWM chip [ +0,006728] [drm] Initialized i915 1.6.0 20201103 for 0000:00:02.0 on minor 0 I do have VirtualBox installed from Debian Fasttrack, which does taint the kernel, but the problem has been present even before I installed the package. Please let me know if there's anything else I can do to help. -- Package-specific info: ** Kernel log: boot messages should be attached ** Model information sys_vendor: Default string product_name: Default string product_version: Default string chassis_vendor: Default string chassis_version: Default string bios_vendor: American Megatrends Inc. bios_version: 5.11 board_vendor: AMI Corporation board_name: Default string board_version: Default string ** PCI devices: 00:00.0 Host bridge [0600]: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series SoC Transaction Register [8086:2280] (rev 34) Subsystem: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series SoC Transaction Register [8086:7270] 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 Kernel driver in use: iosf_mbi_pci 00:02.0 VGA compatible controller [0300]: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Integrated Graphics Controller [8086:22b0] (rev 34) (prog-if 00 [VGA controller]) DeviceName: Onboard IGD Subsystem: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Integrated Graphics Controller [8086:7270] 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 124 Region 0: Memory at a0000000 (64-bit, non-prefetchable) [size=16M] Region 2: Memory at 80000000 (64-bit, prefetchable) [size=512M] Region 4: I/O ports at f000 [size=64] Expansion ROM at 000c0000 [virtual] [disabled] [size=128K] Capabilities: <access denied> Kernel driver in use: i915 Kernel modules: i915 00:0b.0 Signal processing controller [1180]: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series Power Management Controller [8086:22dc] (rev 34) Subsystem: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series Power Management Controller [8086:7270] 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- Interrupt: pin A routed to IRQ 133 Region 0: Memory at a1a3b000 (64-bit, non-prefetchable) [size=4K] Capabilities: <access denied> Kernel driver in use: proc_thermal Kernel modules: processor_thermal_device_pci_legacy 00:14.0 USB controller [0c03]: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series USB xHCI Controller [8086:22b5] (rev 34) (prog-if 30 [XHCI]) Subsystem: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series USB xHCI Controller [8086:7270] Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Interrupt: pin A routed to IRQ 123 Region 0: Memory at a1a00000 (64-bit, non-prefetchable) [size=64K] Capabilities: <access denied> Kernel driver in use: xhci_hcd Kernel modules: xhci_pci 00:1a.0 Encryption controller [1080]: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series Trusted Execution Engine [8086:2298] (rev 34) Subsystem: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series Trusted Execution Engine [8086:7270] 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, Cache Line Size: 64 bytes Interrupt: pin A routed to IRQ 131 Region 0: Memory at a1900000 (32-bit, non-prefetchable) [size=1M] Region 1: Memory at a1800000 (32-bit, non-prefetchable) [size=1M] Capabilities: <access denied> Kernel driver in use: mei_txe Kernel modules: mei_txe 00:1c.0 PCI bridge [0604]: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series PCI Express Port #1 [8086:22c8] (rev 34) (prog-if 00 [Normal decode]) 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, Cache Line Size: 64 bytes Interrupt: pin A routed to IRQ 117 Bus: primary=00, secondary=01, subordinate=01, sec-latency=0 I/O behind bridge: [disabled] Memory behind bridge: a1000000-a14fffff [size=5M] Prefetchable memory behind bridge: [disabled] Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ <SERR- <PERR- BridgeCtl: Parity- SERR+ NoISA- VGA- VGA16+ MAbort- >Reset- FastB2B- PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn- Capabilities: <access denied> Kernel driver in use: pcieport 00:1f.0 ISA bridge [0601]: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series PCU [8086:229c] (rev 34) Subsystem: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series PCU [8086:7270] Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Capabilities: <access denied> Kernel driver in use: lpc_ich Kernel modules: lpc_ich 01:00.0 Network controller [0280]: Broadcom Inc. and subsidiaries BCM4356 802.11ac Wireless Network Adapter [14e4:43ec] (rev 02) Subsystem: Gemtek Technology Co., Ltd BCM4356 802.11ac Wireless Network Adapter [17f9:0036] 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, Cache Line Size: 64 bytes Interrupt: pin A routed to IRQ 136 Region 0: Memory at a1400000 (64-bit, non-prefetchable) [size=32K] Region 2: Memory at a1000000 (64-bit, non-prefetchable) [size=4M] Capabilities: <access denied> Kernel driver in use: brcmfmac Kernel modules: brcmfmac ** USB devices: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 002: ID 258a:0111 SINO WEALTH Gaming Keyboard Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub -- System Information: Debian Release: 11.4 APT prefers stable-security APT policy: (500, 'stable-security'), (500, 'stable-debug'), (500, 'oldoldstable-debug'), (500, 'oldoldstable'), (500, 'stable'), (100, 'bullseye-fasttrack'), (100, 'bullseye-backports-staging') Architecture: amd64 (x86_64) Kernel: Linux 5.18.0-0.deb11.3-amd64 (SMP w/4 CPU threads; PREEMPT) Kernel taint flags: TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE Locale: LANG=ru_RU.UTF-8, LC_CTYPE=ru_RU.UTF-8 (charmap=UTF-8), LANGUAGE not set Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages linux-image-5.10.0-17-amd64 depends on: ii initramfs-tools [linux-initramfs-tool] 0.140 ii kmod 28-1 ii linux-base 4.6 Versions of packages linux-image-5.10.0-17-amd64 recommends: ii apparmor 2.13.6-10 ii firmware-linux-free 20200122-1 Versions of packages linux-image-5.10.0-17-amd64 suggests: pn debian-kernel-handbook <none> ii grub-efi-amd64 2.04-20 pn linux-doc-5.10 <none> Versions of packages linux-image-5.10.0-17-amd64 is related to: pn firmware-amd-graphics <none> pn firmware-atheros <none> pn firmware-bnx2 <none> pn firmware-bnx2x <none> ii firmware-brcm80211 20210315-3 pn firmware-cavium <none> ii firmware-intel-sound 20210315-3 pn firmware-intelwimax <none> pn firmware-ipw2x00 <none> pn firmware-ivtv <none> pn firmware-iwlwifi <none> pn firmware-libertas <none> pn firmware-linux-nonfree <none> ii firmware-misc-nonfree 20210315-3 pn firmware-myricom <none> pn firmware-netxen <none> pn firmware-qlogic <none> pn firmware-realtek <none> pn firmware-samsung <none> pn firmware-siano <none> pn firmware-ti-connectivity <none> pn xen-hypervisor <none> -- no debconf information