Hi
Am 23.09.25 um 11:25 schrieb Nirmoy Das:
On 23.09.25 11:15, Thomas Zimmermann wrote:
Hi
Am 23.09.25 um 10:34 schrieb Nirmoy Das:
Hi Thomas and KuoHsiang
(Not sure if there is separate portal to report AST issues. Let me
know if there is one)
We are observing the following trace on every reboot. I tried
increasing the timeout value but that did not resolve the issue.
I tried to read AST_IO_VGACRI(0xdf) and AST_IO_VGACRI(0xe3) which
returns a value of 0xff. I wonder if
the device is accessible at pci_device_shutdown().
I have attached the lspci output for your review. Please let me
know if you have some ideas how to debug/fix this.
Is that a new problem? I occasionally refactor parts of the driver.
It could happen that an older version works?
We saw this on 6.14 and 6.16 so I think it is not a new issue. Should
we try out more older kernel?
If you can. The DP code got added in v5.19 by commit 594e9c04b586
("drm/ast: Create the driver for ASPEED proprietory Display-Port").
Best regards
Thomas
Regards,
Nirmoy
Best regards
Thomas
[ 196.248014] ast 0008:02:00.0: [drm]
drm_WARN_ON(!__ast_dp_wait_enable(ast, enabled)) [ 196.248045]
WARNING: CPU: 76 PID: 1 at drivers/gpu/drm/ast/ast_dp.c:282
ast_dp_set_enable+0x124/0x158 [ast] [ 196.277550] Modules linked in:
bcache qrtr cfg80211 binfmt_misc cdc_subset ast dax_hmem
drm_shmem_helper cxl_acpi drm_client_lib cxl_port i2c_algo_bit
cxl_core ipmi_ssif drm_kms_helper uio_pdrv_genirq uio coresight_trbe
arm_spe_pmu arm_cspmu_module arm_smmuv3_pmu spi_nor mtd
coresight_funnel acpi_power_meter acpi_ipmi coresight_etm4x
coresight ipmi_msghandler dm_multipath efi_pstore drm nfnetlink
ip_tables x_tables autofs4 overlay isofs nls_iso8859_1 raid10
raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx
xor xor_neon raid6_pq raid1 raid0 linear mlx5_ib ib_uverbs ib_core
mlx5_core ghash_ce sm4_ce_cipher sm4 sm3_ce mlxfw sha3_ce psample
i2c_smbus sha512_ce nvme tls sha1_ce arm_smccc_trng nvme_core
pci_hyperv_intf spi_tegra210_quad dax_pmem i2c_tegra cdc_ether
usbnet aes_neon_bs aes_neon_blk aes_ce_blk aes_ce_cipher [last
unloaded: ipmi_devintf] [ 196.355667] CPU: 76 UID: 0 PID: 1 Comm:
shutdown Tainted: G W 6.16.4-dev-main-nvidia-pset-linux-6-generic
#16+f4490439 PREEMPT(none) [ 196.369453] Tainted: [W]=WARN [
196.372481] Hardware name: NVIDIA Grace CPU P5041/P3880, BIOS
FF.04.00 20250422 [ 196.379955] pstate: 63400009 (nZCv daif +PAN
-UAO +TCO +DIT -SSBS BTYPE=--) [ 196.387073] pc :
ast_dp_set_enable+0x124/0x158 [ast] [ 196.392148] lr :
ast_dp_set_enable+0x124/0x158 [ast] [ 196.397221] sp :
ffff80008049b930 [ 196.400604] x29: ffff80008049b930 x28:
ffffa507dbec1b98 x27: ffff0000acb337b8 [ 196.407901] x26:
0000000000000000 x25: ffff1003985d2e00 x24: ffffa507dbdc45b8 [
196.415197] x23: 0000000000000000 x22: 0000000000418958 x21:
00000000ffffffdf [ 196.422495] x20: ffff100008bac0c8 x19:
0000000000000000 x18: 000000000000004c [ 196.429790] x17:
ffff100008b5f200 x16: ffffa508522b5ce8 x15: 0000000000000000 [
196.437087] x14: 0000000000000000 x13: 2d2d2d2d2d2d2d2d x12:
2d2d2d2d5d206572 [ 196.444384] x11: 656820747563205b x10:
0000000000000020 x9 : ffffa508523621cc [ 196.451681] x8 :
00000000ffffffff x7 : 0000000000000030 x6 : 0000000005000000 [
196.458976] x5 : 000000000000004d x4 : 00000000000000c0 x3 :
0000000000000003 [ 196.466271] x2 : 0000000000000000 x1 :
0000000000000000 x0 : ffff000081356040 [ 196.473566] Call trace: [
196.476061] ast_dp_set_enable+0x124/0x158 [ast] (P) [ 196.481135]
ast_astdp_encoder_helper_atomic_disable+0x28/0x90 [ast] [
196.487630] disable_outputs+0x11c/0x3c8 [drm_kms_helper] [
196.493160] drm_atomic_helper_commit_tail+0x2c/0xb0 [drm_kms_helper]
[ 196.499753] ast_mode_config_helper_atomic_commit_tail+0x34/0x58
[ast] [ 196.506427] commit_tail+0xd8/0x220 [drm_kms_helper] [
196.511503] drm_atomic_helper_commit+0x174/0x190 [drm_kms_helper] [
196.517824] drm_atomic_commit+0x94/0xe0 [drm] [ 196.522392]
drm_atomic_helper_disable_all+0x204/0x220 [drm_kms_helper] [
196.529158] drm_atomic_helper_shutdown+0x90/0x158 [drm_kms_helper] [
196.535567] ast_pci_shutdown+0x1c/0x30 [ast] [ 196.540020]
pci_device_shutdown+0x3c/0xa8 [ 196.544216]
device_shutdown+0x140/0x2b0 [ 196.548229] kernel_restart+0x4c/0xb8 [
196.551974] __do_sys_reboot+0x148/0x260 [ 196.555979]
__arm64_sys_reboot+0x2c/0x40 [ 196.560074] invoke_syscall+0x70/0x100
[ 196.563907] el0_svc_common.constprop.0+0x48/0xf8 [ 196.568712]
do_el0_svc+0x28/0x40 [ 196.572097] el0_svc+0x34/0xd8 [ 196.575220]
el0t_64_sync_handler+0x144/0x168 [ 196.579670]
el0t_64_sync+0x1b0/0x1b8 [ 196.583411] ---[ end trace
0000000000000000 ]--- [ 196.656701] reboot: Restarting system
lspci:
0008:03:00.0 PCI bridge: ASPEED Technology, Inc. AST1150 PCI-to-PCI
Bridge (rev 06) (prog-if 00 [Normal decode]) Subsystem: ASPEED
Technology, Inc. AST1150 PCI-to-PCI Bridge Physical Slot: 2-1 Flags:
bus master, fast devsel, latency 0, NUMA node 0, IOMMU group 24 Bus:
primary=03, secondary=04, subordinate=04, sec-latency=0 I/O behind
bridge: 40000-40fff [size=4K] [16-bit] Memory behind bridge:
40000000-410fffff [size=17M] [32-bit] Prefetchable memory behind
bridge: [disabled] [64-bit] Capabilities: [40] Power Management
version 3 Capabilities: [68] Express PCI-Express to PCI/PCI-X
Bridge, MSI 00 Capabilities: [b0] Subsystem: ASPEED Technology, Inc.
AST1150 PCI-to-PCI Bridge Capabilities: [e0] Vendor Specific
Information: Len=20 <?> Capabilities: [100] Device Serial Number
00-80-5e-00-00-10-0b-b0 Capabilities: [10c] Secondary PCI Express
Capabilities: [150] Virtual Channel Capabilities: [1e0] Vendor
Specific Information: ID=0001 Rev=2 Len=010 <?> Capabilities: [1f0]
Advanced Error Reporting 0008:04:00.0 VGA compatible controller:
ASPEED Technology, Inc. ASPEED Graphics Family (rev 52) (prog-if 00
[VGA controller]) DeviceName: Embedded Video Controller Subsystem:
ASPEED Technology, Inc. ASPEED Graphics Family !!! Unknown header
type 7f Memory at 650040000000 (32-bit, non-prefetchable) [size=16M]
Memory at 650041000000 (32-bit, non-prefetchable) [size=256K] I/O
ports at 40000 [size=128] Kernel driver in use: ast Kernel modules: ast
--
--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Frankenstrasse 146, 90461 Nuernberg, Germany
GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman
HRB 36809 (AG Nuernberg)
