I'm faced with a really annoying problem while trying to set up a dual monitor configuration, and I could use some help. Here's the scoop:
**My Setup:**
- **Laptop**: Lenovo IdeaPad 5 Pro 16ACH6
- **Processor**: AMD Ryzen 7 5800H with integrated graphics
- **Operating System**: Windows 11
- **Monitors**: Two Samsung S27D600UAU
- **Connection Scheme**: Laptop to Monitor 1 via USB-C, then Monitor 1 connected to Monitor 2 using DisplayPort (MST daisy chain).
While both monitors are recognized and can display 2560x1440 at 60Hz, I'm experiencing frustrating random blackouts on the second monitor. It goes dark for about a second but then reconnects right away.
**Details of the Issue:**
- The second monitor goes black intermittently, sometimes every 30-40 minutes or even every few minutes, especially after I reconnect the cables.
- Monitor 1, however, remains stable throughout.
**What I've Tried So Far:**
- Swapped the monitors to see if the issue is with a particular one.
- Used different USB-C cables that came with the monitors.
- Tested each monitor individually via USB-C – no issues there.
- Lowered the resolution to 1080p, but the problem persisted.
- Reinstalled the AMD Software: Adrenalin Edition and drivers.
- Disabled power management features in Windows.
- Checked the monitor settings to rule out deep sleep or other issues.
**Additional Observations:**
- The problem only occurs when utilizing MST.
- Replugging the USB-C sometimes results in the laptop charging, but no signal reaches the monitors – I need to try reconnecting again until it works.
- There could be multiple disconnections after replugging.
- It sometimes stabilizes after a while.
- It feels like there's a DisplayPort link reset happening.
**My Questions:**
- Is there a known issue with using AMD integrated graphics and USB-C for MST setups?
- Has anyone successfully managed to keep a stable MST daisy chain like this?
- Could using a better USB-C cable resolve the issue?
- What are some troubleshooting ideas to fix this?
- Am I better off avoiding MST entirely and opting for docks or separate outputs instead?
2 Answers
I've had similar problems with my dual setup. The random disconnections can often be attributed to the USB-C implementation of the laptop or the specific cables in use. If possible, try using a dedicated display port for one monitor instead of relying solely on MST. It might not be the most elegant solution, but it often yields better reliability.
It sounds like you're experiencing some common issues with MST daisy chaining, especially with AMD graphics. Many have reported instability using MST with certain setups. Have you checked for any firmware updates for your monitors? Sometimes that can resolve these types of connection hiccups. Also, yes, a higher quality USB-C cable could definitely help, as some cables may not handle the data rates required for dual monitor setups effectively.
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