Dennis HilkLinux diagnosticsDE

Storage controllers

VIA VT6421

The VT6421 is a VIA storage-controller path handled by sata_via. The upstream table describes both SATA and PATA channels, which makes the port type important when reading a mixed legacy system.

Editorial source review: Share public profileOpen in the identification tool
On this page
  1. Overview & identity
  2. Driver & binding
  3. Firmware
  4. Read-only diagnostics
  5. Limitations & related issues
  6. References

Overview & identity

1106:3249 selects the vt6421 entry with two SATA channels and one PATA channel. The pair is a controller identity and cannot name a disk on any of those channels.

Curated identifiers
pci 1106:3249

A numeric match establishes a candidate family within the reviewed evidence. Marketing names, board variants, subsystem conditions and successful operation remain separate questions.

Driver & binding

The dedicated sata_via driver integrates with libata. An AHCI module in the system does not establish ownership of this exact VIA function.

  • sata_via — kernel driver/module candidate

Detected, bound, operational: learn the difference

Firmware

Device/revision dependent

Controller firmware, option ROM and drive firmware can be separate. The reviewed sources do not establish a host-loaded filename for this profile; firmware revision and update policy require the actual controller and OEM identity.

Inspect firmware packaging on your distribution

Read-only diagnostics

Run one displayed command at a time. Replace uppercase placeholders with the affected device, interface or module from your own output. Commands are never executed here. Read-only output can still contain private identifiers.

Check the PCI function and bound driver

lspci -nnk -s BDF

Replace BDF with the domain:bus:device.function address. Look for [1106:3249] and Kernel driver in use. sata_via in Kernel modules is only a candidate, not proof of binding.

Inspect visible block-device identities

lsblk -d -o NAME,MODEL,TRAN,HCTL

MODEL describes a block device or a controller-presented logical volume; it is not a PCI-controller identity. HCTL helps distinguish SCSI targets. TRAN can be absent, and this list does not establish the complete physical disk topology.

Read controller and transport messages

sudo journalctl -k -b --no-pager

Elevated access may be needed. Root reads the current boot kernel journal. Associate sata_via messages, port/host identifiers and timeout/reset timestamps with the actual controller. A reset message alone does not prove a bad disk or a firmware defect.

Limitations & related issues

The shared controller can produce ATA messages for different port types. Match each ataN path to its device before applying a SATA-only interpretation to a PATA cable or drive.

These guides are linked for relevant observations, not as known defects of every device in this family.

Choose a hardware diagnostic workflow · Inspect a log excerpt in Fix Lab

References

Source review records a checked implementation or document, not a reproduced hardware test. Version-specific tables do not establish a minimum kernel or guaranteed operation.