AMD Radeon External Events Utility bug causes continuous idle SSD writes; fix reportedly aimed at Adrenalin 26.11.1

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1. zdnet.com ↗ · pub. 09/11/2026 15:30 · coletado 09/11 16:00

   AMD External Events Utility bug causes idle SSD writes on Radeon PCs; fix targeted for Adrenalin 26.11.1

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   AMD's External Events Utility (EEU), installed with Radeon drivers, keeps writing to the system SSD while the PC is idle, at roughly 0.3 to 5 MB/s according to user reports. The reports go back to July on AMD's community forum, and a Reddit user says the utility took about 1% of drive health per month over 16 months, a figure the sources do not verify. AMD representatives acknowledged the bug and tied it to an interaction between the utility and Microsoft's PCIe filter driver. A fix has reportedly been submitted and is aimed at Adrenalin 26.11.1, but no release date is set. No CVE is named, no exploitation or attacker involvement is reported, so the risk is storage wear and operational impact rather than a compromise.

   Technical Details

   • The process involved is atieclxx.exe (AMD External Events Client Module), and it can be identified by sorting processes by write activity in Windows' Resource Monitor. Reports also mention atiesrxx.exe (tomshardware.com, 11-8).
   • At 5 MB/s, an SSD would receive about 18GB of host writes per hour.
   • Reports include systems running Adrenalin 26.19.2, as well as older releases, suggesting the problem may not be limited to the latest update. AMD's October 30 release notes for Adrenalin 26.20.2 don't mention the issue either.
   • Nobody, including AMD, has measured whether these host writes meaningfully affect drive endurance.

   Remediation

   • AMD has published no advisory or release note for a fix. AMD_Vik confirmed that a fix had been submitted and stated that Adrenalin 26.11.1 should resolve the issue. (videocardz.com)
   • Until then, the reported workarounds are: stopping and disabling AMD External Events Utility in services.msc, which has ended the writes in user reports, but owners describe side effects on FreeSync, Adrenalin hotkeys, monitor hot-plugging, and color profiles. (dealntech.com)
   • Alternatively, disabling Resizable BAR in the BIOS may reduce gaming performance. (videocardz.com)
   • Check the activity first, since the bug may not affect every system.

   Conflicting Reports

   • The article says the fix is coming in the next update and attributes the Resizable BAR toggle to the Adrenalin app as Smart Access Memory. VideoCardz and Windows Report point to the BIOS setting, and VideoCardz names Adrenalin 26.11.1 as the target (videocardz.com; windowsreport.com).
   • The article calls the drive damage potentially catastrophic. Tom's Hardware reports that the effect on SSD lifespan has not been independently established (tomshardware.com).
2. securityonline.info ↗ · pub. 09/11/2026 04:51 · coletado 09/11 05:00 primeiro registro

   AMD Radeon driver bug drives continuous idle SSD writes via AMD External Events Utility; hotfix in validation

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   Owners of AMD Radeon graphics cards report that recent Adrenalin driver packages generate continuous background writes to system SSDs even while the machine is idle. Reported rates range from a few hundred kilobytes per second to about 5 MB/s, which would amount to roughly 432 GB per day and over 13 TB per month of unnecessary writes, accelerating NAND wear. The activity has been traced to the AMD External Events Utility service (atieclxx.exe), which normally handles external display events and hotkeys. AMD has acknowledged the problem, attributing it to an unintended interaction between the utility and Microsoft PCIe filter drivers, and is validating an internal hotfix for an upcoming Adrenalin release. This is a reliability and hardware-endurance defect, not a vulnerability: there is no CVE, no exploitation and no confidentiality or integrity impact, so operational urgency for defenders is low.

   Technical Details

   The writes come from the AMD External Events Utility service (atieclxx.exe, paired with atiesrxx.exe), reported as affecting several Radeon hardware generations rather than a single silicon revision, which points to a driver-software defect (en.gamegpu.com). AMD attributes the behaviour to unnecessary background polling triggered by the interaction with Microsoft PCIe filter drivers. Besides drive wear, some users also report in-game stuttering associated with the service (en.gamegpu.com). Several affected users noticed the issue only when SMART/drive-health utilities raised endurance warnings.

   Remediation

   No fixed driver version has been published; AMD says a fix is in the works without announcing a release date (wccftech.com, vgtimes.com). As an interim measure, community reports indicate that stopping or disabling the AMD External Events Utility service halts the spurious writes, at the cost of external display event handling and hotkey bindings. Monitoring host write volume (SMART Total Host Writes) on affected workstations is advised until an Adrenalin release carrying the hotfix ships.